作者:Ryan D. Reeves、Caitlin N. Kinkema、Eleanor M. Landwehr、Logan E. Vine、Jennifer M. Schomaker
DOI:10.1055/s-0037-1610746
日期:2020.4
Metal-catalyzed allene cycloisomerizations provide rapid entry into five-membered carbocyclic frameworks, a common motif in natural products and pharmaceuticals. While both Au(I) and Pd(0)-catalyzed allene cycloisomerizations give 5-endo-dig cyclization, Pd prefers the syn diastereomer in contrast to the anti isomer observed with Au. The change in stereoselectivity is proposed to arise from buildup