Enantioenriched α-Vinyl 1,4-Benzodiazepines and 1,4-Benzoxazepines via Enantioselective Rhodium-Catalyzed Hydrofunctionalizations of Alkynes and Allenes
作者:Álvaro Velasco-Rubio、Rodrigo Bernárdez、Jesús A. Varela、Carlos Saá
DOI:10.1021/acs.joc.1c01268
日期:2021.8.6
Benzofused seven-membered heterocycles such as 1,4-benzo[e]diazepines (1,4-BZDs) and 1,4-benzo[e]oxazepines (1,4-BZOs) were efficiently synthesized by Rh-catalyzed hydrofunctionalization of internal alkynes and allenes in good to excellent yields. The asymmetric hydroamination of (aminomethyl)anilines gave rise to 3-vinyl-1,4-BZDs with excellent enantioselectivities. Orthogonal N-deprotection of 1
苯并稠合七元杂环如 1,4-苯并[ e ]二氮杂 (1,4-BZDs) 和 1,4-苯并[ e ] 氧氮杂 (1,4-BZOs)炔烃和丙二烯的产率非常好。(氨基甲基)苯胺的不对称加氢胺化产生具有优异对映选择性的 3-vinyl-1,4-BZD。1,4-BZD 的正交N-脱保护允许轻松进入 V 2受体拮抗剂 Lixivaptan的高级吡咯并苯二氮卓代谢物。