A facile and convenient one-pot synthesis of polysubstituted thiophenes from 1,3-dicarbonyl compounds in water
作者:Yan Wang、Dewen Dong、Yang Yang、Jie Huang、Yan Ouyang、Qun Liu
DOI:10.1016/j.tet.2006.12.090
日期:2007.3
A facile and convenient one-pot synthesis of polysubstituted thiophenes 2 and polysubstituted thieno[2,3-b]thiophenes 3 from 1,3-dicarbonylcompounds 1 has been achieved in high yields catalyzed by tetrabutylammonium bromide (TBAB) in the presence of K2CO3 in water. TBAB in the aqueous phase can be recycled after the separation of organic products.
在K存在下,由四丁基溴化铵(TBAB)催化以高收率实现了由1,3-二羰基化合物1轻松便捷地一锅合成多取代噻吩2和多取代噻吩[2,3- b ]噻吩3 2 CO 3在水中。分离有机产物后,可将水相中的TBAB回收利用。