�ber die Geschwindigkeit der Aminolyse von verschiedenen neuen, aktivierten, N-gesch�tzten ?-Aminos�ure-phenylestern, insbesondere 2,4,5-Trichlorphenylestern
作者:J. Pless、R. A. Boissonnas
DOI:10.1002/hlca.19630460516
日期:——
A comparison of the ate of aminolysis of many substituted phenyl esters of N-protected α-amino-acids shows that the 2,4,5-trichlorophenyl esters are promising new active derivatives for the synthesis of peptides.
Anthrazoline Photocatalyst for Promoting Esterification and Etherification Reactions via Photoredox/Nickel Dual Catalysis
作者:Xiaolin Zhu、Qiujin Fan、Wei Luo、Danfeng Wang、Yihui Jia、Heyang Li、Zhen Wang、Qi Xiao、Xiaoming He
DOI:10.1002/cjoc.202200663
日期:2023.2.15
readily prepared anthrazoline photocatalyst, which can effectively promote C—O bond formation reactions with the aid of Ni(II) complex. This methodology enables the esterification (36 examples) and etherification (8 examples) with a broad range of scope, allowing aryl and alkyl halides coupled with diverse carboxylic acids/alcohols. Our metal-free photocatalysts have a potential broad application, may