作者:Daniel R. Fandrick、Christine A. Hart、Ifeanyi S. Okafor、Michael A. Mercadante、Sanjit Sanyal、James T. Masters、Max Sarvestani、Keith R. Fandrick、Jennifer L. Stockdill、Nelu Grinberg、Nina Gonnella、Heewon Lee、Chris H. Senanayake
DOI:10.1021/acs.orglett.6b03253
日期:2016.12.2
The copper-catalyzed asymmetric propargylation of cyclic aldimines is reported. The influence of the imine trimer to inhibit the reaction was identified, and equilibrium constants between the monomer and trimer were determined for general classes of imines. Asymmetric propargylation of a diverse series of N-alkyl and N-aryl aldimines was achieved with good to high asymmetric induction. The utility
据报道,铜催化环状亚胺的不对称炔丙基化。确定了亚胺三聚体抑制反应的影响,并确定了一般亚胺类别的单体和三聚体之间的平衡常数。通过良好到高度的不对称诱导,实现了一系列不同的N-烷基和N-芳基醛亚胺的不对称炔丙基化。该实用性通过钛催化的加氢胺化和还原生成手性吲哚唑烷(-)-crispine A和(-)-harmicine证明。