4-Alkenyl-2-aminothiazoles: Smart Dienes for Polar [4 + 2] Cycloadditions
作者:Mateo Alajarin、Jose Cabrera、Pilar Sanchez-Andrada、Raul-Angel Orenes、Aurelia Pastor
DOI:10.1002/ejoc.201201185
日期:2013.1
s with a wide range of dienophiles has been carried out. 4-Alkenyl-2-aminothiazoles act as good in-out dienes, reacting with dienophiles bearing electron-withdrawing groups. The heteroannulations, typically conducted under mild conditions, were endo-selective when cyclic dienophiles were used, and regioselective when the reactions are conducted with unsymmetrical dienophiles. The endo-selective processes