Synthesis of oxazoles through Pd-catalyzed cycloisomerization–allylation of N-propargylamides with allyl carbonates
作者:Akio Saito、Koichi Iimura、Yuji Hanzawa
DOI:10.1016/j.tetlet.2010.01.018
日期:2010.3
In the presence of Pd-2(dba)(3)-Cy3P catalyst, IPr center dot HCl salt [IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene], and Cs2CO3, N-propargylarnicles react with allyl carbonates to give 2,5-disubstituted oxazoles having homoallyl groups through the tandem cycloisomerization-allylation. (C) 2010 Elsevier Ltd. All rights reserved.