作者:Russell L. Hillard、Carol A. Parnell、K.Peter C. Vollhardt
DOI:10.1016/s0040-4020(01)88589-6
日期:1983.1
η5-Cyclopentadienyl dicarbonyl cobalt catalyzes the cocyclization of 1,2-bis(propargyl)-1,2,3,4-tetrahydroisoquinolines 4b and 5 with alkynes to provide a novel synthetic entry into the tetrahydroprotoberberine nucleus. By judicious choice of trimethylsilyl substituents, regiocontrol in the D-ring can be achieved. Reaction of 4b with benzonitrile in the presence of the catalyst furnishes the rare isoquino[2
η 5 -环戊二烯基二羰基钴催化的1,2-双(炔丙基)-1,2,3,4-四氢异喹啉的cocyclization 4B和5与炔烃是提供一种新颖的合成进入tetrahydroprotoberberine细胞核。通过明智地选择三甲基甲硅烷基取代基,可以实现D环中的区域控制。的反应4B与在催化剂的存在下苄腈配料的稀土异奎诺[2,1- b ] -2,6-萘啶骨架,也区域选择性。