نتایج جستجو برای: amidation

تعداد نتایج: 854  

Journal: :Chemical communications 2015
Linh T M Hoang Long H Ngo Ha L Nguyen Hanh T H Nguyen Chung K Nguyen Binh T Nguyen Quang T Ton Hong K D Nguyen Kyle E Cordova Thanh Truong

An azobenzene-containing zirconium metal-organic framework was demonstrated to be an effective heterogeneous catalyst for the direct amidation of benzoic acids in tetrahydrofuran at 70 °C. This finding was applied to the synthesis of several important, representative bioactive compounds.

Journal: :Chemical communications 2015
Subban Kathiravan Shishir Ghosh Graeme Hogarth Ian A Nicholls

A copper mediated C-N bond formation for the amidation of aryl halides using 8-aminoquinoline has been developed. This strategy provides efficient access to amides bearing two contiguous heterocyclic moieties and does not require the presence of additional ligands.

Journal: :The Journal of organic chemistry 2015
Taejoo Jeong Sangil Han Neeraj Kumar Mishra Satyasheel Sharma Seok-Yong Lee Joa Sub Oh Jong Hwan Kwak Young Hoon Jung In Su Kim

The rhodium(III)-catalyzed direct amidation of indoles and pyrroles with aryl and alkyl isocyanates is described. These transformations provide a facile and efficient construction of C2-amidated N-heterocyclic scaffolds.

Journal: :Chemistry methods 2022

Automated chemical synthesizers have become more common in recent years but struggle to apply rigid procedures broad substrate scopes. We developed an adaptive auto-synthesizer that uses online HPLC and FTIR measurements adapt the changing reactivities of different substrates, allowing precise control reaction conditions. To do so, we designed a flexibly-timed procedure consisting specific acti...

Journal: :Green Chemistry 2022

This work describes the biocatalytic amidation of l -proline with ammonia, resulting in a process optimized atom efficiency giving prolinamide an optically pure form (ee >99%). Detailed enzyme and reaction engineering studies are provided.

Journal: :Organic & biomolecular chemistry 2013
Chenxu Hu Xufei Yan Xiangge Zhou Zhengkai Li

Amidation of nitrile with N,N-dimethylformamide (DMF) was catalyzed by Cu2O with 1,10-phenanthroline as a ligand under an oxygen atmosphere. A variety of N,N-dimethyl benzamides were obtained in yields up to 84%.

Journal: :Chemical communications 2012
Anita K Peacock Solène I Cauët Arthur Taylor Patricia Murray Steve R Williams Jonathan V M Weaver Dave J Adams Matthew J Rosseinsky

Poly[2-(methacryloyloxy)ethylphosphorylcholine]-coated SPIONs were prepared through ATRP and amidation coupling reactions. The coated SPIONs exhibited high stability and re-dispersability in phosphate buffered saline and uptake in a stem cell line, with high T(2) relaxivity.

Journal: :Organic chemistry frontiers 2023

A ruthenium-catalyzed C–H amidation using cyclic amides as directing groups features broad functional group tolerance. Mechanistic studies supported by DFT calculations highlight the relevance of six-membered ruthenacycles in catalytic cycle.

2011
Vanessa del Río M. Pilar Callao M. Soledad Larrechi

The evaluation of the temperature effect on the competitiveness between the amine addition and the amidation reaction in a model cure acid-catalysed reaction between the epoxidized methyl oleate (EMO), obtained from high oleic sunflower oil, and aniline is reported. The study was carried out analysing the kinetic profiles of the chemical species involved in the system, which were obtained apply...

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