Efficient synthesis of multi-substituted oxazoles under solvent-free microwave irradiation
作者:Jong Chan Lee、Hyun Jung Choi、Yong Chan Lee
DOI:10.1016/s0040-4039(02)02493-0
日期:2003.1
A new and efficient method for the synthesis of multi-substituted oxazoles from various carbonyl compounds has been developed using sequential treatment of carbonyl compounds with HDNIB and amides such as acetamide or benzamide under solvent-free microwaveirradiation conditions.
A highly efficient method for the synthesis of oxazole derivativesfrom simple amides and ketones has been established via a Pd(II)-catalyzed sp2 C–H activation pathway in one step. The reaction is supposed to proceed through a C–Nbond formation followed by a C–O bond formation closing the ring. Because of the simple and readily available starting materials, easy operation, and high bioactivity of