Distereoselective one-pot synthesis of pyrimidopyrimidines using sulfated tin oxide as a reusable catalyst:An extension of Biginelli-type reaction  

作　　者：Rupali L.Magar Prashant B.Thorat Pratima B.Thorat Vinod V.Thorat Bhagawan R.Patil Rajendra P.Pawar 

机构地区：[1]Department of Chemistry,Deogiri College [2]Department of Chemistry,Dnyanopasak College [3]Department of Chemistry,Sharda Mahavidyalaya

出　　处：《Chinese Chemical Letters》2013年第12期1070-1074,共5页中国化学快报（英文版）

摘　　要：The Biginelli-type compounds 4,5,8a-triarylhexahydropyrimido[4,5-d]pyrimidine-2,7（1H,3H）-diones were synthesized by a one-pot three-component reaction using sulfated tin oxide as a reusable catalyst. This method has the advantages of high yields, short reaction time, simple starting materials and reusability of catalyst for several times.The Biginelli-type compounds 4,5,8a-triarylhexahydropyrimido[4,5-d]pyrimidine-2,7（1H,3H）-diones were synthesized by a one-pot three-component reaction using sulfated tin oxide as a reusable catalyst. This method has the advantages of high yields, short reaction time, simple starting materials and reusability of catalyst for several times.

关 键 词：Biginelli-type reaction Multicomponent reactions Pyrimido[4 5-d]pyrimidine Sulfated tin oxide Reusable catalyst 

分 类 号：O643.36[理学—物理化学]