Regio- and Enantiospecific Rhodium-Catalyzed Allylic Substitution with an Acyl Anion Equivalent
作者:P. Andrew Evans、Samuel Oliver
DOI:10.1021/ol402336u
日期:2013.11.15
The construction of enantiomerically enriched acyclic quaternary substituted ketones via the regio- and enantiospecific rhodium-catalyzed allylic alkylation reaction of chiral nonracemic tertiary alcohols with cyanohydrin pronucleophiles is described. This approach provides an alternative method to the α-arylation and vinylation of acyclic disubstituted ketone enolates, which remains a challenging
描述了通过手性非外消旋叔醇与氰醇原亲核体的区域和对映体特异性铑催化的烯丙基烷基化反应,构建对映体富集的无环季取代酮。该方法为无环二取代的酮烯酸酯的α-芳基化和乙烯基化提供了另一种方法,这仍然是一项艰巨的努力。烯丙基烷基化与闭环复分解的结合促进了对映体富集的2,2-二取代的萘-1-酮的制备,已证明使用更常规的脱芳香化策略很难制备。