作者:Gustavo P. Silveira、Joseph P. Marino
DOI:10.1021/jo302798j
日期:2013.4.5
examples of dihydro-1H-benzindoles by enantioselective γ-lactamization reaction of naphthyl sulfilimines with trichloroacetyl chloride in the presence of ZnCu as catalyst (≥98:2 er and 65–80% yields) are described. Products are obtained by [3,3]-sigmatropic rearrangement of the azasulfonium enolate or followed by a second allylic rearrangement that transfers chirality. The absolute stereochemistry was confirmed
描述了在ZnCu作为催化剂(≥98:2 er和65-80%的收率)下萘基亚硫亚胺与三氯乙酰氯的对映选择性γ-内酰胺化反应生成二氢-1 H-苯并吲哚的第一个例子。产物是通过氮杂-烯醇[的[3,3]-σ重排获得的,或通过转移手性的第二烯丙基重排获得的。X射线晶体学证实了绝对立体化学,这为提出的机理提供了支持。