Enantioselective Addition of Alkynyl Ketones to Nitroolefins Assisted by Brønsted Base/H‐Bonding Catalysis
作者:Teresa E. Campano、Igor Iriarte、Olatz Olaizola、Julen Etxabe、Antonia Mielgo、Iñaki Ganboa、José M. Odriozola、Jesús M. García、Mikel Oiarbide、Claudio Palomo
DOI:10.1002/chem.201805542
日期:2019.3.21
sets of enolizable alkynyl ketones (including methyl ynones with α‐aryl, α‐alkenyl, and α‐alkoxy groups) were able to react smoothly with nitroolefins with the assistance of bifunctional Brønsted base/H‐bond catalysts to provide adducts with two consecutive tertiary stereocenters in a highly diastereo‐ and enantioselective fashion. Further transformation of the obtained adducts into optically active acyclic
在双功能布朗斯台德碱/氢键催化剂的辅助下,各种可烯化的炔基酮(包括带有α-芳基,α-烯基和α-烷氧基的甲基炔酮)能够与硝基烯烃平稳反应,从而提供两个连续的加合物高度非对映和对映选择性的三级立体中心。还证明了所获得的加合物进一步转化为旋光性无环和多环分子,包括一些具有复杂碳骨架的分子。