Enantioselective organocatalyzed functionalization of benzothiophene and thiophenecarbaldehyde derivatives
作者:Francesco Secci、Enzo Cadoni、Claudia Fattuoni、Angelo Frongia、Giuseppe Bruno、Francesco Nicolò
DOI:10.1016/j.tet.2012.04.008
日期:2012.6
study on the enantioselective organocatalyzed cross-aldol reaction of 1-benzothiophene and thiophenecarbaldehydes with different ketones. The reactions were conducted at 0 °C or room temperature to afford the corresponding adducts in high yields and good to excellent ee using different organocatalysts. Interestingly, using (S)-pyrrolidine tetrazole and acetoxyacetone an inversion of the aldol regiochemistry
在本文中,我们报告了对1-苯并噻吩和噻吩甲醛与不同酮的对映选择性有机催化的交叉羟醛反应。该反应在0℃或室温下进行,以使用不同的有机催化剂以高收率和良好至优异的ee提供相应的加合物。有趣的是,使用(S)-吡咯烷四唑和乙酰氧基丙酮观察到羟醛的区域化学反转。