science and technology

COVID-19 pandemic [electronic resource]: school closures and the online preparedness of children / by Marc Frenette, Kristyn Frank and Zechuan Deng

By darius.uleth.ca
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[Ottawa] : Statistics Canada = Statistique Canada, 2020


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Canadians report lower self-perceived mental health during the COVID-19 pandemic [electronic resource] / by Leanne Findlay and Rubab Arim

By darius.uleth.ca
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[Ottawa] : Statistics Canada = Statistique Canada, 2020


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Asymmetric copper-catalyzed conjugate additions of organometallic reagents in syntheses of natural compounds and pharmaceuticals

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00278J, Review Article
Denisa Vargová, Ivana Nemethova, Radovan Sebesta
Stereoselective synthesis of complex molecular structures is needed in medicine as well as in crop-protection. Copper-catalyzed 1,4-additions of organometallic reagents is a robust C-C bond formation strategy applicable in a...
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Synthesis of Biaryl Ketones by Arylation of Weinreb Amides with Functionalized Grignard Reagents under Thermodynamic Control vs. Kinetic Control of N,N-Boc2-Amides

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00813C, Communication
Guangchen Li, Michal Szostak
A highly efficient method for chemoselective synthesis of biaryl ketones by arylation of Weinreb amides (N-methoxy-N- methylamides) with functionalized Grignard reagents is reported. This protocol offers rapid entry to functionalized...
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Highly Z-selective synthesis of 1,3-oxathiol-2-ylidenes and 4-methylene-oxazolidine-2-thiones via atom-specific 5-exo-dig cyclization of propargyl alcohol with isothiocyanate

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00083C, Paper
S. Antony Savarimuthu, D. G. Leo Prakash, S. Augustine Thomas, Thirumanavelan Gandhi, Mrinal K. Bera
The Z-selectivity observed in imine and alkene motifs after 5-exo-dig cyclization of propargyl alcohol and isothiocyanate is rare in the literature and this selectivity can be attributed to electronic and steric factors of the imine and alkene motif respectively.
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Selenium-promoted electrophilic cyclization of arylpropiolamides: synthesis of 3-organoselenyl spiro[4,5]trienones

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00609B, Paper
Ana Maria S. Recchi, Pedro H. P. Rosa, Davi F. Back, Gilson Zeni
A synthetic approach to regioselective synthesis of 3-organochalcogenyl spiro[4,5]trienones and 3-organochalcogenyl[4,5]triene-2,6-diones is described through the reaction of arylpropiolamides with an electrophilic chalcogen source.
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Proof of concept for poor inhibitor binding and efficient formation of covalent adducts of KRASG12C and ARS compounds

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Org. Biomol. Chem., 2020, 18,3069-3081
DOI: 10.1039/D0OB00071J, Paper
Maria G. Khrenova, Anna M. Kulakova, Alexander V. Nemukhin
Comprehensive molecular modeling and kinetic analysis reveal a novel mechanism of the inhibition of the oncogenic mutant of the “undruggable” KRAS protein.
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A modular approach to the bisbenzylisoquinoline alkaloids tetrandrine and isotetrandrine

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Org. Biomol. Chem., 2020, 18,3047-3068
DOI: 10.1039/D0OB00078G, Paper
Ramona Schütz, Maximilian Meixner, Iris Antes, Franz Bracher
A modular short-step synthesis of the bisbenzylisoquinoline alkaloids tetrandrine and isotetrandrine was developed employing N-acyl-Pictet–Spengler reaction and Ullman diaryl ether synthesis as central steps.
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Diversity oriented multi-component reaction (DOS–MCR) approach to access natural product analogues: regio- and chemo-selective synthesis of polyheterocyclic scaffolds via one-pot cascade reactions

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Org. Biomol. Chem., 2020, 18,3082-3092
DOI: 10.1039/D0OB00368A, Paper
Lakshmanan Palanivel, Vasuki Gnanasambandam
Skeletally diverse and complex polyheterocyclic hybrid scaffolds have been accessed via one-pot three-component reaction by exploiting the build/couple/pair strategy of diversity oriented synthesis.
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Recent progress in (hetero)arene cation radical-based heteroarene modification

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Org. Biomol. Chem., 2020, 18,2975-2990
DOI: 10.1039/D0OB00441C, Research Article
Hai-Lei Cui
This review summarizes the advances in heteroarene modification via transformations of in situ generated (hetero)arene cation radicals, ranging from 2010 to 2020.
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The silver catalyzed direct C–H functionalization of quinones with dialkyl amides

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Org. Biomol. Chem., 2020, 18,3027-3031
DOI: 10.1039/D0OB00323A, Communication
Sakthivel Pandaram, Adarsh Krishna T. P., Andivelu Ilangovan
A novel and efficient strategy for the direct C–H amidoalkylation of quinones via a radical pathway has been achieved using readily available alkyl amides and an AgNO3-TBHP catalyst system. This is the first ever example of the synthesis of novel amidoquinone derivatives.
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Stereoselective preparation of P,axial-stereogenic allenyl bisphosphine oxides via chirality-transfer

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Org. Biomol. Chem., 2020, 18,3017-3021
DOI: 10.1039/D0OB00390E, Communication
Mao-Ran Qiu, Hong-Xing Zheng, Jing-Jing Ye, Bing-Xia Yan, Chang-Qiu Zhao, Qiang Li
Allenyl bisphosphine oxides having variable chirality were prepared in high dr, which was controlled by chiral carbon and phorphorus.
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Regio- and stereoselective synthesis of 1,4-enynes by iron-catalysed Suzuki–Miyaura coupling of propargyl electrophiles under ligand-free conditions

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Org. Biomol. Chem., 2020, 18,3022-3026
DOI: 10.1039/D0OB00357C, Communication
Ryosuke Agata, Siming Lu, Hiroshi Matsuda, Katsuhiro Isozaki, Masaharu Nakamura
The first iron-catalysed cross coupling of propargyl electrophiles with lithium alkenylborates has been developed.
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Photochemical rearrangement of diarylethenes: synthesis of functionalized phenanthrenes

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Org. Biomol. Chem., 2020, 18,3098-3103
DOI: 10.1039/D0OB00296H, Paper
A. V. Zakharov, A. V. Yadykov, A. G. Lvov, E. A. Mitina, V. Z. Shirinian
The photocyclization of diarylethenes bearing naphthalene units was explored and a convenient protocol for the synthesis of functionalized phenanthrenes was proposed.
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The ruthenium(II)-catalyzed C–H olefination of indoles with alkynes: the facile construction of tetrasubstituted alkenes under aqueous conditions

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Org. Biomol. Chem., 2020, 18,3158-3163
DOI: 10.1039/D0OB00508H, Paper
Ming Li, Tian-Yu Yao, Sheng-Zheng Sun, Ting-Xun Yan, Li-Rong Wen, Lin-Bao Zhang
An environmentally-friendly and facile protocol for the construction of tetrasubstituted alkenes has been established with Ru(II)-catalyzed C–H bond functionalizations under mild conditions.
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Metal-free cascade reactions of aziridines with arylalkynes and aryldiazoniums: facile access to arylazopyrrolines

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Org. Biomol. Chem., 2020, 18,3149-3157
DOI: 10.1039/D0OB00346H, Paper
Jing Rong, Hao Jiang, Sijing Wang, Zhenni Su, Huiyan Wang, Chuanzhou Tao
A novel and facile approach to synthesize arylazopyrroline scaffolds via metal-free cascade reactions of aziridines with arylalkynes and aryldiazoniums has been developed, providing access to a variety of 4-arylazo-2-pyrrolines in a highly concise fashion.
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Catalyst and solvent switched divergent C–H functionalization: oxidative annulation of N-aryl substituted quinazolin-4-amine with alkynes

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Org. Biomol. Chem., 2020, 18,3032-3037
DOI: 10.1039/D0OB00318B, Communication
Siddi Ramulu Meesa, Praveen Kumar Naikawadi, Kishan Gugulothu, K. Shiva Kumar
Catalyst and solvent controlled ortho/peri site-selective oxidative annulation of C–H bonds of N-aryl substituted quinazolin-4-amines with internal alkynes.
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Progress in recent development of stereoselective synthesis of β2-amino acid derivatives from β-nitroacrylate derivatives

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Org. Biomol. Chem., 2020, 18,2991-3006
DOI: 10.1039/D0OB00448K, Review Article
Hao-Wei Zeng, Ping-Yu Wu, Hsyueh-Liang Wu
β2-Amino acids: recent advances in the synthesis of β2-amino acids and their derivatives from various stereoselective transformations of β-nitroacrylates are summarized.
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Regioselective hydroarylation and arylation of maleimides with indazoles via a Rh(III)-catalyzed C–H activation

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Org. Biomol. Chem., 2020, 18,3093-3097
DOI: 10.1039/D0OB00353K, Paper
Asim Kumar Ghosh, Sadhanendu Samanta, Payel Ghosh, Sukanya Neogi, Alakananda Hajra
Switchable Rh(III)-catalyzed highly regioselective hydroarylation and oxidative arylation of maleimides with 2-arylindazoles via C–H activation have been demonstrated.
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Biochemical characterisation of an α1,4 galactosyltransferase from Neisseria weaveri for the synthesis of α1,4-linked galactosides

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Org. Biomol. Chem., 2020, 18,3142-3148
DOI: 10.1039/D0OB00407C, Paper
Kun Huang, Andrea Marchesi, Kristian Hollingsworth, Peter Both, Ashley P. Mattey, Edward Pallister, Helene Ledru, Simon J. Charnock, M. Carmen Galan, W. Bruce Turnbull, Fabio Parmeggiani, Sabine L. Flitsch
A new α1,4 galactosyltransferase has been characterised and used for the synthesis of natural and non-natural cell surface trisaccharide antigens.
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Rh(III)-Catalyzed regioselective C4 alkylation of indoles with allylic alcohols: direct access to β-indolyl ketones

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Org. Biomol. Chem., 2020, 18,3038-3042
DOI: 10.1039/D0OB00396D, Communication
Changduo Pan, Gao Huang, Yujia Shan, Yiting Li, Jin-Tao Yu
A Rh(III)-catalyzed direct C4 alkylation of indoles with allylic alcohols to access β-indolyl ketones was developed.
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Construction of pH sensitive smart glutathione peroxidase (GPx) mimics based on pH responsive pseudorotaxanes

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Org. Biomol. Chem., 2020, 18,3125-3134
DOI: 10.1039/D0OB00122H, Paper
Jiaxi Li, Wenlong Jia, Ganghui Ma, Xiaoyin Zhang, Shaojie An, Tao Wang, Shan Shi
Two pH-sensitive smart glutathione peroxidase (GPx) mimics were developed by using pH-responsive pseudorotaxanes based on cucurbit[6]uril and organoselenium compounds.
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Sub-stoichiometric reductive etherification of carbohydrate substrates and one-pot protecting group manipulation

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Org. Biomol. Chem., 2020, 18,3135-3141
DOI: 10.1039/D0OB00252F, Paper
Chiao Wen Chen, Ching Chi Wang, Xin Ru Li, Henryk Witek, Kwok-Kong Tony Mong
Polymethylhydrosiloxane (PMHS): a sub-stoichiometric reducing agent for reductive etherification of carbohydrate substrates and its application for one-pot protecting group manipulation
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C-Glycosylation enabled by N-(glycosyloxy)acetamides

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Org. Biomol. Chem., 2020, 18,3043-3046
DOI: 10.1039/D0OB00561D, Communication
Miao Liu, Bo-Han Li, Tian Li, Xia Wu, Meng Liu, De-Cai Xiong, Xin-Shan Ye
An effective C-glycosylation protocol using N-(glycosyloxy)acetamides as donors promoted by SnBr4 has been developed, delivering alkyl C-glycosides and aryl-β-C-glycosides in high yields.
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Synthesis, radiolabelling and initial biological characterisation of 18F-labelled xanthine derivatives for PET imaging of Eph receptors

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Org. Biomol. Chem., 2020, 18,3104-3116
DOI: 10.1039/D0OB00391C, Paper
Marc Pretze, Christin Neuber, Elisa Kinski, Birgit Belter, Martin Köckerling, Amedeo Caflisch, Jörg Steinbach, Jens Pietzsch, Constantin Mamat
Two new fluorine-18-labelled xanthine derivatives with high binding affinity were synthesised as PET-radioligand candidates for Eph receptors.
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Non-biaryl atropisomerism at the C–B bond in sterically hindered aminoarylboranes

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Org. Biomol. Chem., 2020, 18,3007-3011
DOI: 10.1039/D0OB00421A, Communication
Mélodie Birepinte, Frédéric Robert, Sandra Pinet, Laurent Chabaud, Mathieu Pucheault
Sterically hindered aminoarylboranes with atropisomerism about the C–B bond were prepared and resolved by chiral stationary phase HPLC.
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Enantioselective synthesis of chiral α-alkynylated thiazolidones by tandem S-addition/acetalization of alkynyl imines

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Org. Biomol. Chem., 2020, 18,3117-3124
DOI: 10.1039/D0OB00365D, Paper
Mei-Xin Wang, Juan Liu, Zhen Liu, Yingcheng Wang, Qi-Qiong Yang, Wenyu Shan, Yu-Hua Deng, Zhihui Shao
A SPINOL-CPA catalyzed asymmetric [2 + 3]-annulation of in situ generated alkynyl imines and 1,4-dithiane-2,5-diol has been developed to afford enantiopure α-alkynylated thiazolidones.
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Asymmetric synthesis of (−)-solanidine and (−)-tomatidenol

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Org. Biomol. Chem., 2020, 18,3169-3176
DOI: 10.1039/D0OB00457J, Paper
Yun Wang, Guanxin Huang, Yong Shi, Wei-sheng Tian, Chunlin Zhuang, Fen-Er Chen
The asymmetric synthesis of (−)-solanidine (1) and (−)-tomatidenol (2) has been achieved by employing a cascade ringswitching reaction and a cascade azide reduction/intramolecular reductive amination with 32% and 18.7% overall yields respectively.
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Experimental results and computational insight into sequential reactions of β-(2-aminophenyl)-α,β-ynones with aryl isocyanates/benzoyl isothiocyanate

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Org. Biomol. Chem., 2020, 18,3177-3189
DOI: 10.1039/D0OB00087F, Paper
Antonio Arcadi, Massimiliano Aschi, Marco Chiarini, Fabio Marinelli, Vincenzo Marsicano, Gustavo Portalone
The selective formation of quinazoline vs. benzoxazine  and benzothiazine derivatives from β-(2-aminophenyl)-α,β-ynones and aryl isocyanates/benzoyl isothiocyanate was explored. DFT calculations provide a plausible rationale.
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Construction of 2,3-disubstituted benzo[b]thieno[2,3-d]thiophenes and benzo[4,5]selenopheno[3,2-b]thiophenes using the Fiesselmann thiophene synthesis

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Org. Biomol. Chem., 2020, 18,3164-3168
DOI: 10.1039/D0OB00300J, Paper
Roman A. Irgashev, Nadezhda S. Demina, Gennady L. Rusinov
A number of 2,3-disubstituted benzo[b]thieno[2,3-d]thiophenes and benzo[4,5]selenopheno[3,2-b]thiophenes have been obtained using a convenient approach based on the Fiesselmann thiophene synthesis.
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Pseudo-enantiomeric carbohydrate-based N-heterocyclic carbenes as promising chiral ligands for enantiotopic discrimination

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Org. Biomol. Chem., 2020, 18,3012-3016
DOI: 10.1039/D0OB00155D, Communication
Alexander S. Henderson, John F. Bower, M. Carmen Galan
The practical synthesis of pseudo-enantiomeric carbohydrate-based NHC–Rh complexes bearing C1 or C3 sterically differentiated positions is reported. We show that steric bulk at either C1 or C3 leads to enantiotopic discrimination in the hydrosilylation of acetophenone.
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Synthesis and aggregation behaviour of single-chain, 1,32-alkyl-branched bis(phosphocholines) – part 2: lateral chain length triggers self-assembling from sheets to fibres to vesicles

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00534G, Paper
Kai Gruhle, Max Tuchtenhagen, Sindy Müller, Gerd Hause, Annette Meister, Simon Drescher
The synthesis of six single-chain, alkyl-branched bolalipids and first investigations of the lyotropic behaviour of these lipids are reported.
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Synthesis of disaccharide modified berberine derivatives and their anti-diabetic investigation in zebrafish using a fluorescence-based technology

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00327A, Paper
Lizhen Wang, Haotian Kong, Meng Jin, Xiaobin Li, Rostyslav Stoika, Houwen Lin, Kechun Liu
Diglucose modified berberine derivatives can dramatically promote the uptake of 2-NBDG in both zebrafish larvae and their eyes.
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Dearomatization of 3-cyanoindoles by (3 + 2) cycloaddition: from batch to flow chemistry

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00582G, Communication
Maxime Manneveau, Saori Tanii, Fanny Gens, Julien Legros, Isabelle Chataigner
(3 + 2) Dearomatizing cycloaddition of 3-cyanoindoles occurs in smooth conditions with a non-stabilized azomethine ylide, to yield tricyclic indolines in only 1 min under microflow conditions using 3 equiv of the dipole precursor vs. 6 equiv. in a batch reactor.
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Copper-catalyzed diastereoselective hydrothioetherification of oxa(aza)benzonorbornadienes

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00659A, Paper
Qifu Lin, Yongqi Yao, Wen Yang, Yun Tan, Shuqi Chen, Donghan Chen, Dingqiao Yang
A novel copper-catalyzed multicomponent one-pot syn-selective hydrothioetherification of oxa(aza)bicyclic alkenes to synthesize unsymmetrical thioethers has been established.
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Half-sandwich (η5-Cp*)Rh(III) complexes of pyrazolated organo-sulfur/selenium/tellurium ligands: efficient catalysts for base/solvent free C–N coupling of chloroarenes under aerobic conditions

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00538J, Paper
Charu Sharma, Avinash Kumar Srivastava, Kamal Nayan Sharma, Raj Kumar Joshi
Three new Rh(III) complexes of organochalcogen (S/Se/Te) ligands were synthesized and along with a co-catalyst Cu(OAc)2, used for the base/solvent free catalysis of Buchwald type C–N coupling of amines and aryl chlorides under aerobic conditions.
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Photocatalytic xanthate-based radical addition/cyclization reaction sequence toward 2-biphenyl isocyanides: synthesis of 6-alkylated phenanthridines

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00136H, Communication
Pedro López-Mendoza, Luis D. Miranda
A photocatalytic xanthate-based radical addition/cyclization reaction cascade toward 2-biphenylisocyanides is described as a practical and modular approach to 6-alkylated phenanthridines.
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Study on the ArI-catalyzed intramolecular oxy-cyclization of 2-alkenylbenzamides to benzoiminolactones

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00612B, Communication
Huixia Liu, Xiaojun Deng, Xie Huang, Nan Ji, Wei He
A metal-free synthetic method toward the preparation of benzoiminolactones through oxy-cyclization of 2-alkenylbenzamides mediated by a catalyst/oxidant (ArI/mCPBA) system was developed.
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Electrochemical synthesis of selenyl-dihydrofurans via anodic selenofunctionalization of allyl-naphthol/phenol derivatives and their anti-Alzheimer activity

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00629G, Communication
Marcos R. Scheide, Alex R. Schneider, Guilherme A. M. Jardim, Guilherme M. Martins, Daniele C. Durigon, Sumbal Saba, Jamal Rafique, Antonio L. Braga
Herein, we report an eco-friendly, electrosynthetic approach for the intramolecular oxyselenylation of allyl-naphthol/phenol derivatives.
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Visible light promoted continuous flow photocyclization of 1,2-diketones

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00532K, Paper
Francesco Secci, Stefania Porcu, Alberto Luridiana, Angelo Frongia, Pier Carlo Ricci
A continuous flow Norrish–Yang photocyclization of 1,2-diketones has been developed and applied to the synthesis of functionalized 2-hydroxycyclobutanones, under blue light irradiation.
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N-Hydroxy peptides: solid-phase synthesis and β-sheet propensity

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00664E, Paper
Matthew P. Sarnowski, Juan R. Del Valle
Backbone amide hydroxylation of peptide strands enhances β-hairpin folding.
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Ni(II)-Catalyzed vinylic C–H functionalization of 2-acetamido-3-arylacrylates to access isotetronic acids

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00557F, Paper
Biswajit Roy, Eshani Das, Avijit Roy, Dipakranjan Mal
A ligand-free Ni(II)-catalyzed cascade annulation reaction for the synthesis of 4-aryl-substituted isotetronic acids from 2-acetamido-3-arylacrylates via vinylic C–H functionalization is reported.
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Asymmetric trehalose analogues to probe disaccharide processing pathways in mycobacteria

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00253D, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Hadyn L. Parker, Ruben M. F. Tomás, Christopher M. Furze, Collette S. Guy, Elizabeth Fullam
Chemoenzymatic synthesis of azido-functionalised asymmetric trehalose analogues that are resistant to enzymatic degradation to probe carbohydrate processing pathways in mycobacteria.
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Acylation of oxindoles using methyl/phenyl esters via mixed Claisen condensation – An access to 3-alkylideneoxindoles

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00789G, Communication
Ramdas Sreedharan, Purushothaman Rajeshwaran, Pradeep Kumar Reddy Panyam, Saurabh Yadav, C. M. Nagaraja, THIRUMANAVELAN GANDHI
Predominantly, aggressive acid chlorides and stoichiometric coupling reagents are employed in the acylating process for synthesizing carbonyl tethered heterocycles. Herein, we report simple acyl sources, viz. methyl and phenyl esters...
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The key entity of a DCAR agonist, phosphatidylinositol mannoside Ac1PIM1: its synthesis and immunomodulatory function

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/C9OB02724F, Communication
Yohei Arai, Shota Torigoe, Takanori Matsumaru, Sho Yamasaki, Yukari Fujimoto
We achieved the first synthesis of phosphatidylinositol mannoside Ac1PIM1, and a very potent agonist of an innate immune receptor DCAR is demonstrated.
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Heterologous expression of the trichostatin gene cluster and functional characterization of N-methyltransferase TsnB8

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00617C, Communication
Wei Liu, Vinay Gopal Jannu, Zhiwen Liu, Qingbo Zhang, Xiaodong Jiang, Liang Ma, Wenjun Zhang, Changsheng Zhang, Yiguang Zhu
N-Methyltransferase TsnB8 was demonstrated to catalyze successive methyltransfer reactions in the biosynthesis of trichostatin.
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Donor–acceptor fluorophores as efficient energy transfer photocatalysts for [2 + 2] photodimerization

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/C9OB02735A, Paper
Qing-An Wu, Feng Chen, Chen-Chao Ren, Xue-Fen Liu, Hao Chen, Liang-Xuan Xu, Xiao-Cong Yu, Shu-Ping Luo
Donor–acceptor fluorophores can act as efficient energy transfer photocatalysts to activate enone substrates, realizing photodimerization and isomerization reaction of enone substrates without precious metal photocatalysts.
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Catalyst- and Solvent-Free Efficient Access to N-Alkylated Amines via Reductive Amination using HBPin

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00740D, Communication
ARNAB RIT, Vipin Kumar Pandey, Somnath Bauri
A sustainable approach which works under catalyst- and solvent-free conditions for the synthesis of structurally diverse secondary amines has been uncovered. This one-pot protocol works efficiently at room temperature and...
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A laccase-catalysed tyrosine click reaction

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00650E, Communication
Shinichi Sato, Keita Nakane, Hiroyuki Nakamura
The tyrosine click reaction of peptides/proteins with the tyrosine modification reagent, N-methyl luminol, was catalysed by a laccase in the presence of molecular oxygen (O2) at 37 °C.
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A silver-catalyzed radical ring-opening reaction of cyclopropanols with sulfonyl oxime ethers

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00055H, Paper
Xiaobao Zeng, Xin Wang, Yanan Zhang, Li Zhu, Yu Zhao
A simple and efficient method for the radical ring-opening reaction of cyclopropanols with sulfonyl oxime ethers catalyzed by AgNO3 is developed, affording γ-keto oxime ethers in moderate to good yields.
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