Cobalt-Catalyzed Enantio- and Diastereoselective Intramolecular Hydroacylation of Trisubstituted Alkenes
作者:Junfeng Yang、Alice Rérat、Yang Jie Lim、Corinne Gosmini、Naohiko Yoshikai
DOI:10.1002/anie.201611518
日期:2017.2.20
Enantio‐ and diastereoselective synthesis of trans‐2,3‐disubstituted indanones is achieved by intramolecular hydroacylation of 2‐alkenylbenzaldehydes bearing trisubstituted alkenyl groups under cobalt‐chiral diphosphine catalysis. Notably, a high level of enantioselectivity is induced regardless of the stereochemistry (E/Z ratio) of the alkenyl group of the starting material. Deuterium‐labeling experiments
对映体和非对映体选择性合成反式-2,3-二取代的茚满酮是通过在钴-手性二膦催化下将带有三取代烯基的2-烯基苯甲醛分子内加氢酰化而实现的。值得注意的是,无论原料的烯基的立体化学(E / Z比)如何,都诱导出高水平的对映选择性。氘标记实验阐明了E和Z异构体的有效反应途径。