Dynamically resolved peri-substituted 2-formyl naphthamides: a new class of atropisomeric chiral auxiliary
作者:Jonathan Clayden、Catherine McCarthy、John G Cumming
DOI:10.1016/s0040-4039(00)00397-x
日期:2000.4
the amide group. They may be obtained as single enantiomers by dynamic resolution on formation of diastereoisomeric aminal derivatives and used as chiral auxiliaries in a new addition/rearrangement strategy. Nucleophilic attack by vinyl anion equivalents in the presence of Lewis acids leads atroposelectively to single diastereoisomers of allylic alcohols, whose derivatives undergo stereospecific [3
2-甲酰基-N,N-二烷基萘酰胺是手性的阻转异构化合物,只要它们在酰胺基团周围被取代即可。它们可以通过动态拆分非对映异构的氨基衍生物的形成而作为单一对映异构体获得,并在新的添加/重排策略中用作手性助剂。在路易斯酸的存在下,乙烯基阴离子当量的亲核攻击会导致对映体选择性地导致烯丙基醇的单一非对映异构体,其衍生物会经历立体有规[3,3]-σ重排。重排产物的还原性臭氧分解返回对映体纯的官能化醇,并且原则上可以回收阻转异构体助剂。