A tandem one-pot aqueous phase synthesis of thiazoles/selenazoles
摘要:
The first ever tandem one-pot synthetic protocol for the synthesis of thiazoles/selenazoles from alkynes via the formation of 2,2-dibromo-1-phenylethanone is reported. The reaction is catalyzed by beta-cyclodextrin in aqueous medium and resulted in good yields. (C) 2012 Elsevier Ltd. All rights reserved.
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