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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

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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Copper-catalyzed diastereoselective hydrothioetherification of oxa(aza)benzonorbornadienes

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

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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Electrochemical synthesis of selenyl-dihydrofurans via anodic selenofunctionalization of allyl-naphthol/phenol derivatives and their anti-Alzheimer activity

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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Discrimination of cellular developmental states focusing on glycan transformation and membrane dynamics by using BODIPY-tagged lactosyl ceramides

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00547A, Paper
Kenta Arai, Atsuko Ohtake, Shusaku Daikoku, Katsuhiko Suzuki, Yukishige Ito, Kazuya Kabayama, Koichi Fukase, Yoshimi Kanie, Osamu Kanie
Different cellular states were discriminated by analysing either the glycan transformation of exogenously introduced fluorescently tagged probe molecules or fluorescence recovery after photobleaching before conversion.
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Recent Progress on Transition Metal-catalysed Regioselective C–H Transformations Based on Noncovalent Interactions

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00703J, Review Article
Yoichiro Kuninobu, Takeru Torigoe
Transition metal-catalysed C–H transformations are powerful tools to obtain functionalised organic molecules from simple starting materials. To control regioselectivity is one of the most important issues in C–H transformations. Since...
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Electrochemically enabled functionalization of indoles or anilines to synthesis of hexafluoroisopropoxy indole and anilinederivatives

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00157K, Communication
Zu-yu Mo, Xin-Yu Wang, Yu-zhen Zhang, Li Yang, Hai-Tao Tang, Ying-Ming Pan
An environmentally benign electrochemically enabled site-selective functionalization of indole or aniline derivatives with hexafluoroisopropanol in the presence of tetrabutyl ammonium hexafluorophosphate as redox catalyst and electrolyte was demonstrated in this...
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Synthesis of Glycosyl Sulfoximines by a Highly Chemo- and Stereoselective NH- and O-Transfer to Thioglycosides

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00647E, Paper
Arianna Tota, Claudia Carlucci, Luisa Pisano, Giuliano Cutolo, Guy James Clarkson, Giuseppe Romanazzi, Leonardo Degennaro, James A Bull, Patrick Rollin, Renzo Luisi
A synthesis of unprecedented and stable glycosyl sulfoximines is reported. The developed strategies represent the first examples of highly stereoselective sulfoximine formation directly from thioglycosides. X-ray analysis confirmed the structure...
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Copper(I)/Ganphos catalysis: enantioselective synthesis of diverse spirooxindoles using iminoesters and alkyl substituted methyleneindolinones

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00546K, Paper
Hao Cui, Ke Li, Yue Wang, Manman Song, Congcong Wang, Donghui Wei, Er-Qing Li, Zheng Duan, François Mathey
A copper/Ganphos-catalyzed asymmetric 1,3-dipolar cycloaddition of glycine iminoesters with alkyl substituted 3-methylene-2-oxindoles is described, producing the spiro[pyrrolidin-3,3'-oxindole]s in good yields with high ee.
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Origin of the ligand effect in the cobalt catalyzed regioselective hydroboration of 1,3-diene

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00628A, Paper
Yuhua Liu, ZhongJie Jiang, Jipei Chen
The detailed mechanism and the origin of the ligand-controlled regioselectivity in the cobalt catalyzed hydroboration of 2-substituted 1,3-diene have been investigated.
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Enantioselective Synthesis of Indanone Spiro-Isochromanone Derivatives via Dinuclear Zinc-Catalyzed Michael/Transesterification Tandem Reaction

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00541J, Paper
Xiao-Chao Yang, Meng Xu, Jin-Bao Wang, Meng-Meng Liu, Francois Mathey, Yuan-Zhao Hua, Mincan Wang
An enantioselective Michael/transesterification tandem reaction of α-hydroxy indanones with ortho-ester chalcones was realized by dinuclear zinc catalysts. A series of enantiomerically pure spiro[indanone-2,3’-isochromane-1-one] derivatives were obtained in good yields with...
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Synthesis and photophysical properties of selenopheno[2,3-b]quinoxaline and selenopheno[2,3-b]pyrazine heteroacenes

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00718H, Paper
Amol Sonawane, Atsushi Shimozuma, Taro Udagawa, Masayuki Ninomiya, Mamoru Koketsu
In this paper, we report the novel synthesis of three different heterocycles namely 2-arylselenopheno[2,3-b]quinoxaline, 3-(aryl/alkylselanyl)-2-arylselenopheno[2,3-b]quinoxaline and 6-phenyl-7-(arylselanyl)selenopheno[2,3-b]pyrazine derivatives from the corresponding 2,3-dichloroquinoxaline and 2,3-dichloropyrazine derivatives. Further, photophysical properties were investigated...
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Protein labeling approach to improve lysosomal targeting and efficacy of antibody–drug conjugates

Org. Biomol. Chem., 2020, 18,3229-3233
DOI: 10.1039/D0OB00265H, Communication
Ying Han, Yifan Da, Mingjia Yu, Yaping Cheng, Xin Wang, Jiale Xiong, Guoying Guo, Yan Li, Xianxing Jiang, Xiaoqing Cai
An anti-EGFR nanobody was labeled at the C-terminus with a lysosome-sorting NPGY (Asn-Pro-Gly-Tyr) motif via sortase-mediated ligation to enhance the clathrin-mediated endocytosis.
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Three-component synthesis of 1,4-benzothiazines via iodide-catalyzed aerobic C–H sulfuration with elemental sulfur

Org. Biomol. Chem., 2020, 18,3234-3238
DOI: 10.1039/D0OB00074D, Communication
Jingjing Jiang, Xiaolong Tuo, Zhuquan Fu, Huawen Huang, Guo-Jun Deng
Five to Six: Beyond the well-established thiazole formation from elemental sulfur, this method provides the first access to the corresponding six-membered N,S-heterocyclic products via direct functionalization of multiple C–H bonds.
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Visible light induced 3-position-selective addition of arylpropiolic acids with ethers via C(sp3)–H functionalization

Org. Biomol. Chem., 2020, 18,3258-3262
DOI: 10.1039/D0OB00480D, Communication
Zi-juan Wan, Xiao-feng Yuan, Jun Luo
Although the 2-position-selective decarboxylative coupling or addition of arylpropiolic acids with cyclic ethers has been intensively investigated, selective functionalization of arylpropiolic acids at the 3-position is still a big challenge.
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Modular synthesis of oligoacetylacetones via site-selective silylation of acetylacetone derivatives

Org. Biomol. Chem., 2020, 18,3297-3302
DOI: 10.1039/D0OB00501K, Paper
Parantap Sarkar, Yuya Inaba, Hayato Shirakura, Tomoki Yoneda, Yasuhide Inokuma
Aliphatic oligoketones with tailored carbonyl and substituent sequences were modularly synthesized utilizing site-selective formation of enol silyl ethers. Their unique conformational preferences in solid-state were revealed by X-ray crystallography.
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Chemo- and regioselective click reactions through nickel-catalyzed azide–alkyne cycloaddition

Org. Biomol. Chem., 2020, 18,3374-3381
DOI: 10.1039/D0OB00579G, Paper
Woo Gyum Kim, Seung-yeol Baek, Seo Yeong Jeong, Dongsik Nam, Ji Hwan Jeon, Wonyoung Choe, Mu-Hyun Baik, Sung You Hong
Nickel-catalyzed [3 + 2] cycloaddition reactions of unsymmetrical alkynes and organic azides afford substituted 1,2,3-triazoles with high levels of chemo- and regioselectivity.
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Dipyrazolodioxadiazocines as shelf-stable “ready-to-use” precursors for an in situ generation of enolate-iminium 1,4-dipoles: a straightforward atom-economical approach to pyrazolo[5,1-d][1,3,5]dioxazines

Org. Biomol. Chem., 2020, 18,3382-3391
DOI: 10.1039/D0OB00451K, Paper
Vladimir E. Zhulanov, Valeria A. Vigovskaya, Maksim V. Dmitriev, Pavel S. Silaichev, Andrey N. Maslivets, Michael Rubin
Generation of cyclic enolate-iminium 1,4-dipoles via thermolysis of dipyrazolodioxadiazocines in the presence of ketones allowed for efficient preparation of pyrazolo[5,1-d][1,3,5]dioxazines.
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Controlling the liberation rate of the in situ release of a chemical fuel for the operationally autonomous motions of molecular machines

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00669F, Paper
Chiara Biagini, Giorgio Capocasa, Daniele Del Giudice, Valerio Cataldi, Luigi Mandolini, Stefano Di Stefano
Aminolysis of the anhydride of 2-cyano-2-phenylpropanoic acid can be employed to conveniently regulate the liberation rate of the related acid which, in turn, can be used as a fuel for acid–base operated molecular machines.
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A Selectfluor-promoted oxidative reaction of disulfides and amines: access to sulfinamides

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00720J, Paper
Haibo Mei, Jiang Liu, Romana Pajkert, Gerd-Volker Röschenthaler, Jianlin Han
An unprecedented metal-free oxidative reaction of disulfides and amines with Selectfluor as a mild oxidant under aerobic conditions was developed.
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Synthesis of gem-difluoroalkenes via nickel-catalyzed allylic defluorinative reductive cross-coupling of trifluoromethyl alkenes with epoxides

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00535E, Communication
Xiao-Yu Lu, Run-Chuang Jiang, Jia-Mei Li, Chuang-Chuang Liu, Qing-Qing Wang, Hai-Pin Zhou
A nickel-catalyzed defluorinative reductive cross-coupling of trifluoromethyl alkenes with epoxides has been developed.
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Hierarchical Self-Assembly of Azobenzene Dyad with Inverted Amide Connection into Toroidal and Tubular Nanostructures

Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00833H, Communication
Shiki Yagai, Takuho Saito
Inversion of the connectivity of amide groups in foldable azobenzene dyads with chiral side chains, which can self-assemble into toroids and nanotubes, significantly increases the thermal stability of these aggregates....
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Correction: Nickel-catalyzed cyanation of phenol derivatives activated by 2,4,6-trichloro-1,3,5-triazine

Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB90052D, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Liang Wang, Yaoyao Wang, Jun Shen, Qun Chen, Ming-Yang He
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70 per cent of teachers in Delhi schools are obese: survey

Nearly 70 per cent of schoolteachers in the national capital are overweight and obese, a recent survey has claimed.




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Urban Ministry questions Delhi govt's move to set up SEZs

The Centre has questioned the legality of SEZs in absence of any provision for the same in the Master Plan Delhi (MPD) 2021.




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Aspiring actor-cum-model arrested for killing IT professional

A 20-year-old aspiring actor- cum-model was arrested in the national capital for allegedly murdering a young woman IT professional a week ago after she refused to heed to his demand for money.




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CISF needs 4,500 addl personnel to man new 'Metro' routes

With the Delhi Metro expanding its wings beyond Delhi, the CISF will require additional 4,500 personnel to guard the new operations of the mass rapid transport system.




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Delhi: 2 schools closed after students test positive for H1N1 virus

Two city schools have been closed for a week from Monday after a student each from the educational institution tested positive for swine flu.




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DMRC delays inauguration of Yamuna Bank-Noida line

Delhi Metro has delayed the inauguration of the Yamuna Bank-Noida line by a month.




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Six held for forceful religious conversion

The arrests came soon after tribals demanded the arrest of those involved in the activity.




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We’ll look back at 2014 as a new journey for India-Israel ties: Alon Ushpiz

India and Israel have signed a far-reaching agreement on homeland security where the two countries will collaborate on policing, forensics, counter-terrorism, etc. Israel's ambassador Alon Ushpiz spoke with Indrani Bagchi about shared concerns, PM Modi — and justice in the 2012 attack on an Israeli diplomat:




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'I'd have done anything else other than write this book': Akhil Sharma

New York-based writer Akhil Sharma 's novel Family Life has received rave reviews. The autobiographical book traces the journey of a family that moves to the US from India, its eldest son suddenly suffering a freak accident.




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Progress measures must include nature — think beyond GDP: Rachel Kyte

As India debates environmental health versus economic growth, Rachel Kyte, vice-president and special envoy for climate change at the World Bank Group, feels it is vital to think beyond basic GDP.




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India needn't follow West's energy model — have a new path: ​Sam Tranum

There's a fundamental mismatch between India's energy resources and the needs of its people and companies for energy.




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Indian-American scientists develop alternative to radio tags

A team of Indian-American scientists has developed a smart tracking system, which could very well provide an honourable alternative to the radio tags.




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Indian-origin model accuses Aus modelling agency of racism

According to a report in the local daily, Kema Rajandran was told by a Parth-based modelling agency that her work chances were "limited" in the country because she was not Caucasian.




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Lucknow: Spurned by beau, woman sets self afire




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Delhi Covid-19 cases mount to 6,318; toll 68

The total number of coronavirus cases in the national capital climbed to 6,318, with 338 new cases and two fresh deaths being reported on Friday, according to the Delhi government authorities.




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Fake sites offer liquor at doorstep in Delhi

The excise department has filed a complaint with Crime Branch of Delhi Police against fake websites claiming to deliver liquor at people's doorsteps. The websites became active a day after Delhi government announced an e-token delivery system to avoid chaos at liquor shops.




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Delhi govt says it will pay train fare of migrants

Delhi government on Friday said it would bear the cost of train travel of migrant workers if their home states didn’t respond on the issue.




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Temp likely to touch 40°C in Delhi today

The temperature in Delhi is likely to touch 40 degrees Celsius on Saturday, followed by two cloudy days, Met official said on Friday.




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Delhi: Liquor hunt shifts online, site crashes

The Delhi government's initiative to reduce crowding outside liquor stores by issuing e-tokens - one could book a time slot to buy the tipple without getting into long queues - failed to work as the excise department website crashed due to heavy rush late Thursday.




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Tears of relief at IGI arrival and departure

At 12.05pm on Friday, Air India flight AI-381 made a smooth landing at Indira Gandhi International Airport. Though half an hour late in arriving, the 234 passengers from Singapore were delighted to step on home soil after two months of anxiety and uncertainty. Their relatives weren’t allowed to meet them, and yet the relief of being back in India made them grin, wave their hands and give the thumbs up sign.




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Delhi construction workers told to use Aarogya app

Amid the debate over privacy concerns, Delhi government has issued orders to make Aarogya Setu mobile application popular among factory and construction workers returning to work after six weeks of lockdown.




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Delhi traders appeal for passes to check stock

Traders in commercial markets and shopping complexes have requested the government to issue passes so that they can open their shops for two-three days and check their stock.




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Delhi air loses out to partial freedom

The average PM2.5 concentration in the city fell by around 31% and NO2 levels by 33% in the month-long full lockdown period between March 24 and April 25, data analysed by System of Air Quality and Weather Forecasting and Research (SAFAR) shows.




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Woman kills self at AIIMS after her mother dies

A 23-year-old woman allegedly committed suicide at the AIIMS here after her mother died of cancer at the hospital, police said on Saturday. She was reported missing after her mother passed away on Wednesday and her body was found near the new private ward block of the hospital on Saturday, they said, adding that she fell to her death from a building.




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3 more Delhi pvt hosps to treat corona patients




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Delhi lockdown: Today's updates from your city

Amid prevalent chaos and uncertainty over access to the essential services and commodities during the lockdown, we bring you the latest updates from your city.




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Confusion prevails over Delhi's Covid-19 toll

According to the bulletin, AIIMS (Delhi and Jhajjar) reported two deaths, Safdarjung Hospital reported four, RML 26 and Lady Hardinge Medical College had none till Friday.