Tandem addition-cyclization reaction catalyzed by ytterbium chloride:An efficient one-step synthesis of 2-amino-4H-3,1-benzothiazine  

作　　者：HUANG Jie YU Yong HUA Lu YAO ZhiGang XU Fan SHEN Qi 

机构地区：[1]Key Laboratory of Organic Synthesis,College of Chemistry,Chemical Engineering and Material Science,Soochow University

出　　处：《Science China(Technological Sciences)》2013年第3期717-723,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(20872106,20972107);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：A clean,efficient method to synthesize 2-amino-4H-3,1-benzothiazines by ytterbium chloride-catalyzed tandem addition-cyclization reaction of o-aminocinnamate and isothiocyanates under solvent-free conditions is developed.

关 键 词：2-amino-3 1-benzothiazine ytterbium chloride catalysis tandem reaction 

分 类 号：TQ225.241[化学工程—有机化工] TQ655