Phosphine-Catalyzed Sequential Michael Addition between
α-Aminonitriles and Methyl Acrylate for Cyclization: Synthesis of N-Aryl-Substituted Pyrrolidines
作者:H. C. Jang、K. R. Sin、H. R. Paek、Y. M. Jang、S. H. Jong
DOI:10.1134/s1070428020120283
日期:2020.12
and methyl acrylate as starting materials. The first Michael addition between α-aminonitrile and methyl acrylate occurred mainly with Lewis base catalysts such as PBu3, DBU, and DABCO, but the subsequent Michael addition happened only with phosphine catalysts like PBu3. Furthermore, pyrrolidine derivatives were obtained from the corresponding aldehydes, amines, trimethylsilyl cyanide, and methyl acrylate
N-芳基取代的吡咯烷衍生物是通过三丁基膦催化的α-氨基腈和丙烯酸甲酯作为起始材料的连续迈克尔加成合成的。α-氨基腈和丙烯酸甲酯之间的第一次迈克尔加成主要发生在路易斯碱催化剂如 PBu3、DBU 和 DABCO 中,但随后的迈克尔加成仅发生在膦催化剂如 PBu3 上。此外,吡咯烷衍生物由相应的醛、胺、氰化三甲基甲硅烷和丙烯酸甲酯通过多组分串联反应获得。