The selective reduction of α,β-unsaturatedcarbonyl compounds was achieved to produce saturatedcarbonyl compounds with aqueous HI solution. The introduction of aryl group at α or β position was ef...
用 HI 水溶液选择性还原 α,β-不饱和羰基化合物以制备饱和羰基化合物。在α或β位引入芳基是有效的...
Cobalt-Catalyzed α-Methoxymethylation and Aminomethylation of Ketones with Methanol as a C1 Source
Using methanol as a sustainable C1 source, cobalt-catalyzed alpha-methoxymethylation and alpha-aminomethylation of ketones have been developed. With cheap CoCl2 center dot 6H(2)O as catalyst and TBHP as oxidant, the methoxymethylated products were obtained within a short reaction time in up to 91% yield. Based on the observed reversibility of methoxy adduct to enone, the alpha-aminomethylation of ketones was then achieved by a one-pot methylenation/aza-Michael addition sequence. In addition, an easy way to convert alpha-methoxymethyl ketones to alpha-aminomethyl ketones has been discovered.
v. Braun; Anton; Weissbach, Chemische Berichte, 1930, vol. 63, p. 2847,2861
作者:v. Braun、Anton、Weissbach
DOI:——
日期:——
Oxa-Michael addition promoted by the aqueous sodium carbonate
作者:Shi-Huan Guo、Sheng-Zhu Xing、Shuai Mao、Ya-Ru Gao、Wen-Liang Chen、Yong-Qiang Wang
DOI:10.1016/j.tetlet.2014.10.019
日期:2014.12
An efficient Michael addition of alcohols to activated alkenes promoted by sodium carbonate with water as reaction medium has been developed. The reaction provides a general, economical and environmentally friendly approach for the synthesis of beta-alkoxycarbonyl compounds. (C) 2014 Elsevier Ltd. All rights reserved.
Freudenberg; Wilke, Chemische Berichte, 1952, vol. 85, p. 78,83