Formation of reagent-selective products from 2-(4,5-dihydrothi- azol-2-ylthio)-1-arylethanone with different nucleophiles
摘要:
The reactions of 2-(4,5-dihydrothiazol-2-ylthio)-1-arylethanone with different nucleophiles including semicarbazide hydrochloride, hydroxylamine hydrochloride, hydrazine, ethylenediamine and aminoethanol have been investigated, and the formation of a variety of products with different reagents is highlighted.[GRAPHICS].
Three-component solvent-free synthesis of highly substituted bicyclic pyridines containing a ring-junction nitrogen
作者:Shengjiao Yan、Yulan Chen、Lin Liu、Nengqin He、Jun Lin
DOI:10.1039/c0gc00373e
日期:——
An efficient one-pot, three-component synthesis of highly substituted bicyclic pyridines containing a ring-junction nitrogen, starting from simple and readily available materials, is described. Cyclocondensation of heterocyclic ketene aminals (HKAs), triethoxymethane, and active methylene compounds by refluxing under solvent-free and catalyst-free conditions, provided bicyclic pyridines in excellent