Preparative synthesis of cyclohexanone oxime esters
摘要:
Preparative procedures have been developed for the synthesis of cyclohexanone oxime esters by acylation of cyclohexanone oxime with carboxylic acid anhydrides in the presence of perchloric acid or with carboxylic acid chlorides in the presence of pyridine.
Abstract A facile access to the synthesis of alkyl and aryl oxime esters of ketoximes and aldoximes in high yields (90–97%) is reported. The reactions were performed using N-[3-(methylamino)propyl]-N′-ethylcarbodiimide hydrochloride (EDCI) reagent in the presence of 4-(dimethylamino)pyridine (DMAP) as a catalyst at room temperature. The isolation and purification of products is very simple and in cases
N-Heterocyclic carbene catalyzed synthesis of oxime esters
作者:Dieter Enders、André Grossmann、David Van Craen
DOI:10.1039/c2ob26974k
日期:——
A triazolium salt derived N-heterocyclic carbene catalyzes the redox esterification reaction between α–β-unsaturated aldehydes and oximes. The resulting saturated oxime esters were obtained in very good yields for a broad range of aliphatic, aromatic and heteroaromatic substrates.
Preparative synthesis of cyclohexanone oxime esters
作者:E. A. Dikusar、N. A. Zhukovskaya
DOI:10.1134/s1070428008090248
日期:2008.9
Preparative procedures have been developed for the synthesis of cyclohexanone oxime esters by acylation of cyclohexanone oxime with carboxylic acid anhydrides in the presence of perchloric acid or with carboxylic acid chlorides in the presence of pyridine.