Catalytic Chemical Amide Synthesis at Room Temperature: One More Step Toward Peptide Synthesis
作者:Tharwat Mohy El Dine、William Erb、Yohann Berhault、Jacques Rouden、Jérôme Blanchet
DOI:10.1021/acs.joc.5b00378
日期:2015.5.1
An efficient method has been developed for direct amide bond synthesis between carboxylic acids and amines via (2-(thiophen-2-ylmethyl)phenyl)boronic acid as a highly active bench-stable catalyst. This catalyst was found to be very effective at room temperature for a large range of substrates with slightly higher temperatures required for challenging ones. This methodology can be applied to aliphatic
Herein, we report a copper‐catalyzed intramolecular benzylic C(sp3)−H oxidation of unprotected aniline derivatives under aerobic conditions, which enables the preparation of phenanthridine compounds. To the best of our knowledge, this is the pioneering reaction of dehydrogenative C(sp3)−N bond formation from unprotected anilines under a Cu/O2 system. Notably, various anilines possessing alkyl, methoxy
Synthesis of 5-and 6-membered carbon-boron heterocycles by pyrolysis of pyridine-arylboranes
作者:R. Van Veen、F. Bickelhaupt
DOI:10.1016/s0022-328x(00)92836-5
日期:1973.1
Coupling N–H Deprotonation, C–H Activation, and Oxidation: Metal-Free C(sp<sup>3</sup>)–H Aminations with Unprotected Anilines
作者:Christopher J. Evoniuk、Gabriel dos Passos Gomes、Sean P. Hill、Satoshi Fujita、Kenneth Hanson、Igor V. Alabugin
DOI:10.1021/jacs.7b07519
日期:2017.11.15
An intramolecular oxidativeC(sp3)–H amination from unprotected anilines and C(sp3)–H bonds readily occurs under mild conditions using t-BuOK, molecular oxygen and N,N-dimethylformamide (DMF). Success of this process, which requires mildly acidic N–H bonds and an activated C(sp3)–H bond (BDE < 85 kcal/mol), stems from synergy between basic, radical, and oxidizing species working together to promote