Catalytic imino Diels–Alder reaction by triflic imide and its application to one-pot synthesis from three components
作者:Kiyosei Takasu、Naoya Shindoh、Hidetoshi Tokuyama、Masataka Ihara
DOI:10.1016/j.tet.2006.09.092
日期:2006.12
An imino Diels–Alder reaction of 2-siloxydienes with aldimines catalyzed by triflic imide (Tf2NH; 0.1∼10 mol % amount) has been developed leading to substituted piperidin-4-ones. Tf2NH catalyst is compatible with basic functions, such as pyridine and indole rings in the imino Diels–Alder reaction. Furthermore, X-ray crystallographic analysis indicates that trans-2,6-diphenyl-4-piperidinone 4a obtained
已经开发了2-甲硅烷基二烯与三氟甲酰亚胺(Tf 2 NH; 0.1〜10 mol%的量)催化的醛亚胺的亚氨基Diels-Alder反应,从而产生了取代的哌啶-4-酮。Tf 2 NH催化剂与基本功能兼容,例如亚氨基Diels-Alder反应中的吡啶和吲哚环。此外,X射线晶体学分析表明,通过该反应获得的反式-2,6-二苯基-4-哌啶酮4a在固态具有独特的构象。