halo

Rapid in situ generation of 2-(halomethyl)-5-phenylfuran and nucleophilic addition in a microflow reactor

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00358F, Paper
Open Access
Yuma Matsuura, Shinichiro Fuse
Various 2,5-disubstituted furans were synthesized via 5-substituted 2-halomethylfurans using microflow technology.
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halo

Catalyst- and base-free visible light-enabled radical relay trihalomethylation/functional group-migration/carbonylation with CX3SO2Cl

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00292J, Paper
Jinkai Hu, Chenglei Yang, Xiaotao Qin, Hui Liu, Tongtong Ma, Ao-tong Shi, Qing-Long Lv, Xingman Liu, Jinhui Yang, Dianjun Li
A visible light-enabled photocatalyst-free radical trihalomethylation/cyano (or benzo[d]thiazol-2-yl) 1,4-migration/carbonylation reaction of 2-hydroxy-2-hex-5-enenitrile (or (benzo[d]thiazol-2-yl)-pent-4-enol) with CX3SO2Cl (X = F, Cl) is reported.
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halo

Stereoselective Synthesis of gem-Dihalopiperidines via Halo-Aza-Prins Cyclization Reaction: Access to Piperidin-4-ones and Pyridines

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00338A, Paper
Anil Kumar Saikia, Surjya Kumar Bora, Subhamoy Biswas, Bipin Kumar Behera
An efficient methodology for the synthesis of 4,4-dihalopiperidine derivatives has been developed from N-(3-halobut-3-en-1-yl)-4-methylbenzenesulfonamide and aldehyde catalyzed by In(OTf)3 in excellent yields. The reaction involves an initial formation of six...
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halo

3-Halo-5,6-dihydro-4H-1,2-oxazine N-oxides as synthetic equivalents of unsaturated nitrile oxides in the [3 + 2]-cycloaddition with arynes: synthesis of substituted 3-vinyl-1,2-benzisoxazoles

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00391H, Communication
Alexander A. Lukoyanov, Svetlana A. Aksenova, Andrey A. Tabolin, Alexey Yu. Sukhorukov
3-Halo-1,2-oxazine N-oxide derivatives act as surrogates of vinyl nitrile oxides in tandem [3 + 2]-cycloaddition/[3 + 2]-cyclofragmentation with arynes leading to benzisoxazoles.
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halo

Photoproperties of Favipiravir and their 6-Substituted Analogues: Fluorescence Controlled through Halogen Substitution and Tautomerism

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00397G, Paper
Angel H Romero, Marcos Couto, Ivan E Romero, German Fuentes, Matías N. Möller
Herein, we showed the photophysical properties of the favipiravir and their 6-substituted analogues. Also, we interpreted the origin of the fluorescence of the favipiravir and their 6-substituted analogues as function...
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halo

Halomax marks 22 Years of leadership in the lighting industry with a focus on innovation and sustainability

Their extensive product range includes downlighters, profile lights, and step lights for residential interiors, as well as decorative and office lighting for commercial spaces.




halo

A comprehensive study on the halogenation effect of non-fullerene acceptors for photovoltaic application

Mater. Chem. Front., 2024, 8,3643-3652
DOI: 10.1039/D4QM00648H, Research Article
Jing Peng, Lijiao Ma, Huixue Li, Guanlin Wang, Zhihao Chen, Feiwu Chen, Jianhui Hou, Shaoqing Zhang
Four small-molecule acceptors with the same conjugated backbone but different terminal halogen substituents (F, Cl, Br, I) were developed, the effects of these halogens on film morphology and optoelectronic performance were systematically studied.
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halo

Tailoring the adsorption properties of imidazole-based halogen bonded organic frameworks for anionic dye removal

Mater. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QM00735B, Research Article
Shumeng Wang, Hongqiang Dong, Guanfei Gong, Siyi Lin, Jiahao Zhao, Zhennan Tian, Ya Lu, Xuguan Bai, Meimei Zhang, Lu Wang, Kang-Da Zhang, Shigui Chen
A novel class of [N⋯I⋯N]+ halogen-bonded XOFs were synthesized using imidazole ligands. XOF-TIB showed strong adsorption capacity and selectivity for anionic dyes, with excellent stability and reusability for environmental remediation.
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halo

Self-assembled phthalocyanine-based nano-photosensitizers in photodynamic therapy for hypoxic tumors

Mater. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QM00602J, Review Article
Lin He, Ding Ma
This paper reviews the potential of self-assembled phthalocyanine-based nano-photosensitizers for overcoming the limitations of photodynamic therapy (PDT) in treating hypoxic tumors.
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halo

Highly sensitive OFET based room temperature operated gas sensors using a thieno[3,2-b]thiophene extended phthalocyanine semiconductor

J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC03208J, Paper
Recep Isci, Ozgur Yavuz, Sheida Faraji, Dilara Gunturkun, Mehmet Eroglu, Leszek A. Majewski, Ismail Yilmaz, Turan Ozturk
A novel thienothiophene (TT) and phthalocyanine (Pc) based conjugated material was designed, synthesized, fabricated for an organic field effect transistor (OFET) and utilized as an OFET based gas sensor for hazardous gases such as NO2 and SO2.
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halo

A wheel-like polyoxometalate for haloperoxidase inspired antibiofouling with H2O2 in-situ provided by electrocatalysis

Inorg. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QI00482E, Research Article
Yumeng Bian, Runze Wang, xinxin xu, Jin Chen, Qiang Wang
Biofouling is adhering of micro-organisms on submerged surfaces, which is a common phenomenon presents serious hazard to industry and public health. Nanozymes with haloperoxidase mimic activity are promising options to...
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halo

Dual ligand-enabled iron and halogen-containing carboxylate-based photocatalysis for chloro/fluoro-polyhaloalkylation of alkenes

Chem. Sci., 2024, Advance Article
DOI: 10.1039/D4SC04038D, Edge Article
Open Access
Wanru Han, Zhenyan Zhao, Kui Jiang, Yu Lan, Xuehan Yu, Xiaoyu Jiang, Wei Yang, Donghui Wei, Shi-Jun Li, Linbin Niu
Dual ligand-enabled iron photocatalysis for the conversion of all kinds of halogen-containing carboxylates (CnXmCOO, X: F, Cl, Br) to CnXm radicals is disclosed for chloro/fluoro-polyhaloalkylation of non-activated alkenes.
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halo

Capillary action-driven surface-enhanced Raman spectroscopy (SERS) for the identification of phthalocyanine blue in modern paintings based on the BPG spot test

Anal. Methods, 2024, 16,2147-2151
DOI: 10.1039/D3AY01378B, Technical Note
Shao-Chun Hsueh, Ling-Hsuan Wang, Yung-Chen Liao, Hui-Yu Chiang, Cheng-Huang Lin
A method for the extraction and accumulation of Ag nanoparticles utilizing capillary action through a piece of triangular-shaped cotton paper is reported.
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halo

Multi-step chirality transfer and racemization kinetics of pillar [5]arenes by tuning the halogen substituents on the rims

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01799D, Research Article
Lizhi Fang, Xiaowen Guan, Yanling Shen, Dayang Zhou, Long Chen, Xiaochuan Chen, Wanhua Wu, Leyong Wang, Cheng Yang
Halogen-substituted pillar[5]arenes exhibited hindered hydroquinone subunit flipping, enabling enantioseparation.
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halo

Photocatalytic arylation/alkylation of olefins/alkynes via halogen-atom transfer mediated by NHC-BH3

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01562B, Research Article
Xinhan Li, Yao Zhong, Fengsong Tan, Yusong Fei, Xiaohan Zhao, Jianbin Xu, Baomin Fan
A versatile method for radical reductive cross-coupling of iodides and activated olefins under mild conditions, facilitated by NHC-BH3 through photocatalysis, was developed.
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halo

Naphtho[1,2-c:5,6-c']bis([1,2,3]thiadiazole) enables the design of efficient halogen-free polymer donors and fabrication of organic solar cells with >19% efficiency

Energy Environ. Sci., 2024, 17,8593-8608
DOI: 10.1039/D4EE02414A, Paper
Tao Jia, Yongmin Luo, Yulong Hai, Tao Lin, Xudong Qin, Ruijie Ma, Kezhou Fan, Aleksandr A. Sergeev, Top Archie Dela Peña, Yao Li, Mingjie Li, Kam Sing Wong, Gang Li, Jiaying Wu, Shengjian Liu, Fei Huang
Fusion and isomerization strategies are used to develop an electron-withdrawing motif naphtho[1,2-d:5,6-d']bis([1,2,3]thiadiazole) (iNT) and a halogen-free polymer donor achieving an efficiency of 19.1%.
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halo

1D Zn(II)/2D Cu(I) halogen pyridyl coordination polymers. Band gap engineering by DFT for predicting more efficient photocatalysts in water treatment

Catal. Sci. Technol., 2024, 14,6573-6583
DOI: 10.1039/D4CY00969J, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Andrea García-Hernán, Fernando Aguilar-Galindo, Oscar Castillo, Pilar Amo-Ochoa
The study utilizes density functional theory to enhance the design and efficiency of coordination polymers for sustainable photocatalytic applications.
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halo

Correction: 1D Zn(II)/2D Cu(I) halogen pyridyl coordination polymers. Band gap engineering by DFT for predicting more efficient photocatalysts in water treatment

Catal. Sci. Technol., 2024, 14,6720-6720
DOI: 10.1039/D4CY90084G, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Andrea García-Hernán, Fernando Aguilar-Galindo, Oscar Castillo, Pilar Amo-Ochoa
The content of this RSS Feed (c) The Royal Society of Chemistry




halo

IBzH (IBenzhydryl): Sterically-Flexible N-Aliphatic N-Heterocyclic Carbenes (NHC) for Iron-Catalyzed C(sp3)–C(sp2) Cross-Coupling of Unactivated Haloalkanes

Catal. Sci. Technol., 2024, Accepted Manuscript
DOI: 10.1039/D4CY01315H, Communication
Marlena Kardela, Błażej Dziuk, Roman Szostak, Michal Szostak, Elwira Bisz
Iron-catalyzed cross-coupling has emerged as a pivotal concept for the synthesis of valuable products across various facets of chemical research, including pharmaceuticals, organic materials and biological probes. In this respect,...
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halo

iQOO 13 will get a rear floating halo light aimed at gamers

iQOO 13 is slated to get a rear floating Halo light that supports various effects and is aimed at gamers




halo

Cambrex to acquire dosage-form drug contractor Halo

With purchase, manufacturer of active pharmaceutical ingredients will move downstream into finished drugs




halo

Cambrex to acquire dosage-form drug contractor Halo

With purchase, manufacturer of active pharmaceutical ingredients will move downstream into finished drugs




halo

Development of a highly efficient electrocatalytic hydrogenation and dehalogenation system using a flow cell with a Pd tube cathode

Green Chem., 2024, 26,11328-11333
DOI: 10.1039/D4GC04617J, Paper
Hiroaki Tajima, Hideki Ishii, Shinsuke Inagi, Toshio Fuchigami
A novel flow and circulation electrolytic system has been developed for the highly efficient cathodic hydrogenation of unsaturated compounds and dehalogenation of various aromatic halides.
The content of this RSS Feed (c) The Royal Society of Chemistry




halo

Utilize rather than create: transforming phthalonitrile resin into N-rich hierarchical porous carbon for supercapacitor materials

Green Chem., 2024, Advance Article
DOI: 10.1039/D4GC04103H, Paper
Yi Li, Qiancheng Liu, Qian Zhang, Xiaoxiao Li, Yang Yang, Pan Wang, Kui Li, Ying Li, Fei Zhong, Qi Liu, Yun Zheng, Xulin Yang, Peng Zhao
The “utilize rather than create” strategy employs the reaction product (RPH) as the precursor and the by-product (KCl) as the template for the synthesis of N-rich hierarchical porous carbon for high performance supercapacitor materials.
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halo

Nigeria: Manchester United - Odion Ighalo se montre prudent en ce qui concerne son avenir

Pr�t� � Manchester United par le Shanghai...




halo

Hoops to Halo: Centuries of Games Kids Play

Workshop size is limited, please make a reservation at dchm@nyhistory.org.

Sun, 06/17/2012 -
14:30 to 16:30
Sun, June 17th, 2012 |
3:30 pm to 5:30 pm

Celebrate Father’s Day with a special family workshop all about games – parents and kids learn about historical games and build their own video game prototypes. A New-York Historical Society educator will lead families with children between ages 7-12 through galleries and behind-the-scenes to view different toys and games in the collection.

Family Programs: 
Sold out: 
0




halo

4-Amino-5-{[cyclo­hex­yl(meth­yl)amino]­meth­yl}iso­phthalo­nitrile

The title compound, C16H20N4, was synthesized by cyanation of brom­hexine. The compound crystallizes with two unique mol­ecules in the asymmetric unit. The substituted aniline and cyclo­hexane rings are inclined to one another by 37.26 (6)° in one mol­ecule and by 22.84 (7)° in the other. In the crystal packing, intra- and inter­molecular N—H⋯N hydrogen bonds and an inter­molecular C—H⋯N contact were observed.




halo

Crystal structure and Hirshfeld surface analysis of 4-[4-(1H-benzo[d]imidazol-2-yl)phen­oxy]phthalo­nitrile dimethyl sulfoxide monosolvate

This work presents the synthesis and structural characterization of [4-(1H-benzo[d]imidazol-2-yl)phen­oxy]phthalo­nitrile, a phthalo­nitrile derivative carrying a benzimidazole moiety. The compound crystallizes as its dimethyl sulfoxide monosolvate, C21H12N4O·(CH3)2SO. The dihedral angle between the two fused rings in the heterocyclic ring system is 2.11 (1)°, while the phenyl ring attached to the imidazole moiety is inclined by 20.7 (1)° to the latter. In the crystal structure, adjacent mol­ecules are connected by pairs of weak inter­molecular C—H⋯N hydrogen bonds into inversion dimers. N—H⋯O and C—H⋯O hydrogen bonds with R21(7) graph-set motifs are also formed between the organic mol­ecule and the disordered dimethyl sulfoxide solvent [occupancy ratio of 0.623 (5):0.377 (5) for the two sites of the sulfur atom]. Hirshfeld surface analysis and fingerprint plots were used to investigate the inter­molecular inter­actions in the crystalline state.





halo

Chandra X-ray Observatory shows Milky Way is surrounded by halo of hot gas

stronomers have used NASA's Chandra X-ray Observatory to find evidence our Milky Way Galaxy is embedded in an enormous halo of hot gas that extends for hundreds of thousands of light years.

The post Chandra X-ray Observatory shows Milky Way is surrounded by halo of hot gas appeared first on Smithsonian Insider.




halo

The many flavours of halogen bonds – message from experimental electron density and Raman spectroscopy

Experimental electron-density studies based on high-resolution diffraction experiments allow halogen bonds between heavy halogens to be classified. The topological properties of the electron density in Cl⋯Cl contacts vary smoothly as a function of the inter­action distance. The situation is less straightforward for halogen bonds between iodine and small electronegative nucleophiles, such as nitro­gen or oxygen, where the electron density in the bond critical point does not simply increase for shorter distances. The number of successful charge–density studies involving iodine is small, but at least individual examples for three cases have been observed. (a) Very short halogen bonds between electron-rich nucleophiles and heavy halogen atoms resemble three-centre–four-electron bonds, with a rather symmetric heavy halogen and without an appreciable σ hole. (b) For a narrow inter­mediate range of halogen bonds, the asymmetric electronic situation for the heavy halogen with a pronounced σ hole leads to rather low electron density in the (3,−1) critical point of the halogen bond; the properties of this bond critical point cannot fully describe the nature of the associated inter­action. (c) For longer and presumably weaker contacts, the electron density in the halogen bond critical point is only to a minor extent reduced by the presence of the σ hole and hence may be higher than in the aforementioned case. In addition to the electron density and its derived properties, the halogen–carbon bond distance opposite to the σ hole and the Raman frequency for the associated vibration emerge as alternative criteria to gauge the halogen-bond strength. We find exceptionally long C—I distances for tetra­fluoro­diiodo­benzene molecules in cocrystals with short halogen bonds and a significant red shift for their Raman vibrations.




halo

A smorgasbord of halogen bonds?




halo

Chronic Fatigue Syndrome/Myalgic Encephalomyelitis Is a Legitimate Disease That Needs Proper Diagnosis and Treatment, Says IOM Report Identifies Five Symptoms to Diagnose Disease

Myalgic Encephalomyelitis/Chronic Fatigue Syndrome -- commonly referred to as ME/CFS -- is a legitimate, serious, and complex systemic disease that frequently and dramatically limits the activities of affected individuals, says a new report from the Institute of Medicine.




halo

Organohalogen Flame Retardants Used in Consumer Products Cannot Be Assessed for Hazards as a Single Class, But Can Be Assessed in Subclasses, Says New Report

A new report from the National Academies of Sciences, Engineering, and Medicine offers guidance to the Consumer Product Safety Commission (CPSC) on how to conduct a hazard assessment of nonpolymeric, additive organohalogen flame retardants (OFRs), which are used in some consumer products.




halo

Sonata Software adds new functionality to its enterprise mobility product Halosys

Sonata Software announced that its Unified Enterprise Mobility Platform, Halosys, has been enhanced with additional features that boost optimization and usability




halo

Listen to this pug and you'll understand why the makers of 'Halo' hired him for voice-overs

Gyoza the pug was hired by 343 Industries to make alien sounds for the company's new Halo video game, "Halo Infinite."




halo

Indica Labs Completes Nationwide Deployment of HALO AP™ at NeoGenomics Laboratories, Inc.

Indica Labs, leading provider of computational pathology software, announces the release of its HALO AP Anatomic Pathology platform and nationwide deployment at NeoGenomics, one of the largest oncology testing laboratories in the United States.




halo

Guardian Roofing To Set To Announce 2020 Winner of Guardian Halo Project

One Local Resident Will Receive Free Roofing Services As Part of Community Give-Back Program




halo

Halo Outpost Discovery Event Reactions

On this week's Xbox show, we give our hands-on impressions from the first weekend of the Halo Outpost Discovery fan experience, discuss a new Batman release from Rocksteady (not a new game, sadly), talk through the small glimpses we've been getting at Playdead's new post-Inside game, and more!




halo

The First Halo Infinite Easter Egg Has Been Found

A keen-eyed Halo fan discovered an interesting audio Easter egg hiding in the Halo Infinite E3 trailer. We play it for you and speculate about what it means. Plus: the Xbox Dashboard is getting another refresh, the Blair Witch game finally shows itself, classic Doom games get re-released on Xbox - but things don't go super smoothly for Bethesda, and more!




halo

Chronic Traumatic Encephalopathy (CTE) in Amateur Athletes

A new study suggests that vulnerability to CTE is not limited to professional athletes.




halo

Method for producing ring-halogenated N,N-dialkylbenzylamines

The invention relates to a method for preparing ring-halogenated N,N-dialkylbenzylamines and intermediates obtainable therefrom for preparing agrochemicals and pharmaceutically active ingredients.




halo

Production of alkali metal cyclopentadienylide and production of dihalobis (η-substituted-cyclopentadienyl) zirconium from alkali metal cyclopentadienylide

A process for producing an alkali metal cyclopentadienylide is disclosed which comprises reacting in a solvent an alkali metal hydride with a disubstituted or trisubstituted 1,3-cyclopentadiene. Further, a process for producing a dihalobis(η-substituted-cyclopentadienyl)zirconium is disclosed which comprises reacting a zirconium halide with the above alkali metal cyclopentadienylide. The former process enables performing the reaction between the disubstituted or trisubstituted 1,3-cyclopentadiene and the alkali metal hydride at an easily controllable temperature of room temperature to about 150° C. and also enables obtaining the alkali metal cyclopentadienylide in high yield. The latter process enables obtaining the dihalobis(η-substituted-cyclopentadienyl)zirconium in high yield.




halo

Treatment system for removing halogenated compounds from contaminated sources

A treatment system and a method for removal of at least one halogenated compound, such as PCBs, found in contaminated systems are provided. The treatment system includes a polymer blanket for receiving at least one non-polar solvent. The halogenated compound permeates into or through a wall of the polymer blanket where it is solubilized with at least one non-polar solvent received by said polymer blanket forming a halogenated solvent mixture. This treatment system and method provides for the in situ removal of halogenated compounds from the contaminated system. In one embodiment, the halogenated solvent mixture is subjected to subsequent processes which destroy and/or degrade the halogenated compound.




halo

Methods to separate halogentated olefins from 2-chloro-1,1,1,2-tetrafluoropropane using a solid adsorbent

The present invention provides a method for separating halocarbons. In particular, the invention provides a method for separating halogenated olefin impurities from 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) using a solid adsorbent, particularly activated carbon. More particularly the invention pertains to a method for separating 2-chloro-3,3,3-trifluoro-propene (HCFO-1233xf) from HCFC-244bb, which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).




halo

Preparation of fluorinated olefins via catalytic dehydrohalogenation of halogenated hydrocarbons

A process for making a fluorinated olefin having the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms, preferably carried out in the presence of a catalyst selected from the group consisting of (i) one or more metal halides, (ii) one or more halogenated metal oxides, (iii) one or more zero-valent metals/metal alloys, (iv) a combination of two or more of the foregoing.




halo

Synthesis of and curing additives for phthalonitriles

A composition having a mixture of the below compounds having a mole ratio of at least 1:20. Ar1 and Ar2 are independently selected aromatic groups. A composition comprising phthalonitrile compounds that comprise at least 5 mol % of the first compound below. A method of: providing a solution of a dichloroaromatic compound having an electron-withdrawing group bound to each aromatic ring containing one of the chloride groups; a dihydroxyaromatic compound or anion thereof; an organic transition metal complex or a transition metal salt; an alkaline hydroxide base; and a solvent; and heating the solution to a temperature at which the dichloroaromatic compound and the dihydroxyaromatic compound react to form a dimetallic salt of an aromatic ether oligomer. The molar ratio of the dihydroxyaromatic compound to the dichloroaromatic compound is greater than 2:1. Water formed during the heating is concurrently distilled from the solution.




halo

Halo active aromatic sulfonamide organic compounds and uses therefor

Aromatic N-halosulfonamide organic compounds have been known for over one hundred years. The ability of these compounds to release active halogen ions has been utilized in a range of biocidal and fungicidal applications. This disclosure deals with the use of halo active aromatic sulfonamide organic compounds as odor control and/or biocidal agents in a cleaning solution for use with bovines and other dairy animals.




halo

Method of preparing an organohalosilane

A method of preparing organohalosilanes comprising combining an organohalide having the formula RX (I), wherein R is a hydrocarbyl group having 1 to 10 carbon atoms and X is fluoro, chloro, bromo, or iodo, with a contact mass comprising at least 2% (w/w) of a palladium suicide of the formula PdxSiy (II), wherein x is an integer from 1 to 5 and y is 1 to 8, or a platinum suicide of formula PtzSi (III), wherein z is 1 or 2, in a reactor at a temperature from 250 to 700° C. to form an organohalosilane.




halo

Method for producing 30-halogenated betulinic acid

The invention discloses a method for producing 30-halogenated betulinic acid. Betulin is used as a raw material and selectively oxidized and halogenated to generate 30-betulinic acid, and the selected oxidation and halogenation agent has high selectivity and does not affect C-3 hydroxyl or carbon-carbon double bonds. Oxidation and halogenation are completed in one step, so the process route is short, the treatment method is simple, and the product is purified easily.