2-(Diphenylphosphino)benzoyl-Substituted Calix[4]arene: Efficient Organocatalyst in Aza-Morita-Baylis-Hillman Reaction of N-Sulfonated Imines with Methyl Vinyl Ketone
作者:Weihui Zhong、Yanyan Shen、Qian Tang、Chenchen Zhang
DOI:10.1055/s-0031-1290358
日期:2012.3
A novel bifunctional organocatalyst 5,11,17,23-tetrabutyl-25-[2-(diphenylphosphino)benzoate]-26,27,28-trihydroxycalix-[4]arene (LB3) was synthesized and applied to promote the aza-Morita-Baylis-Hillman (aza-MBH) reaction of N-sulfonated imines with methyl vinyl ketone. It was found that in the presence of acidic additives the reaction rate could be accelerated to give aza-MBH adducts in good to excellent
合成了新型双功能有机催化剂5,11,17,23-四丁基-25- [2-(二苯基膦基)苯甲酸酯] -26,27,28-三羟基杯-[4]芳烃(LB3),并用于促进氮杂-森田-N-磺化亚胺与甲基乙烯基酮的-Baylis-Hillman(aza-MBH)反应。已经发现,在酸性添加剂的存在下,可以加快反应速率,从而以良好或优异的产率得到氮杂-MBH加合物。与我们以前的含膦的杯[4]亚芳基LB1相比,该新型催化剂更为有效。 含膦的杯[4]芳烃-有机催化-Aza-Morita-Baylis-Hillman