Tandem catalytic oxidative deacetylation of acetoacetic esters and heteroaromatic cyclizations
作者:Yeming Ju、Di Miao、Ruiyang Yu、Sangho Koo
DOI:10.1039/c4ob02441a
日期:——
One pot syntheses of furan, thiophene, and pyrrole were accomplished by oxidative deacetylation using Mn(III)/Co(II) catalysts and the Paal–Knorr reaction from 1,5-dicarbonyl compounds, which are prepared from the conjugate addition of ethyl acetoacetate to α,β-unsaturated carbonyl compounds. The oxidative deacetylation and reductive cyclization of β-ketoesters derived from ethyl acetoacetate and o-nitrobenzyl
一锅合成呋喃,噻吩和吡咯是通过使用Mn(III)/ Co(II)催化剂进行氧化脱乙酰作用以及1,5-二羰基化合物的Paal-Knorr反应完成的,该反应是通过乙酰乙酸乙酯的共轭加成制备的α,β-不饱和羰基化合物。衍生自乙酰乙酸乙酯和邻硝基苄基溴化物的β-酮酸酯的氧化脱乙酰基和还原环化有效地产生了各种取代的吲哚。