Microwave-Assisted Synthesis of 2-Substituted 4-Biarylyl-1,3-thiazoles by Carbon-Carbon Cross-Coupling in Water
作者:Kamal Dawood、Moteaa El-Deftar
DOI:10.1055/s-0029-1218662
日期:2010.3
Suzuki-Miyaura and Heck-Mizoroki C-C cross-coupling reactions of 4-(halophenyl)-1,3-thiazoles with aryl(hetaryl)boronic acids or olefins, respectively, were investigated by using a catalytically active benzimidazole-based palladium(II) complex under both thermal and microwave heating conditions in water. The factors affecting the optimization of such reactions were evaluated. palladium - homogeneous
An efficient and rapid procedure for the synthesis of 2,4-disubstituted-1,3-thiazoles and selenazoles has been described by the reaction of α-bromoketones with thiourea, phenylthiourea and selenourea at ambient temperature in aqueousmediumunder ultrasonic irradiation. Analytically pure products were formed within 10–60 s in excellent yields. The advantageous features of this non-conventional methodology