Expeditious synthesis of 2,3-dihydroquinazolin-4(1<i>H</i>)-ones in aqueous medium using thiamine hydrochloride (VB<sub>1</sub>) as a mild, efficient, and reusable organocatalyst
作者:Jutika Devi、Subarna Jyoti Kalita、Dibakar Chandra Deka
DOI:10.1080/00397911.2017.1337149
日期:2017.9.2
ABSTRACT A simple and straightforward synthesis of 2,3-dihydroquinazolin-4(1H)-ones is developed by reacting anthranilamide with various aldehydes or ketones under mild reaction conditions, using thiamine hydrochloride as a cost-effective, readily available, and green catalyst in water. Simple purification process, high yields within short reaction time, wide substrate scope, operational simplicity
摘要 2,3-二氢喹唑啉-4(1H)-酮的合成是通过邻氨基苯甲酰胺与各种醛或酮在温和的反应条件下反应的,使用硫胺盐酸盐作为一种经济高效、易于获得的绿色催化剂,在水。纯化过程简单、反应时间内收率高、底物范围广、操作简单、催化剂可重复使用多达三个循环,丰富了该协议的适用性。图形概要