Extending the Substrate Scope in the Hydrogenation of Unfunctionalized Tetrasubstituted Olefins with Ir-P Stereogenic Aminophosphine–Oxazoline Catalysts
作者:Maria Biosca、Ernest Salomó、Pol de la Cruz-Sánchez、Antoni Riera、Xavier Verdaguer、Oscar Pàmies、Montserrat Diéguez
DOI:10.1021/acs.orglett.8b04084
日期:2019.2.1
MaxPHOX-type ligands have been successfully applied in the challenging asymmetric hydrogenation of tetrasubstituted olefins under mild reaction conditions. Gratifyingly, these catalyst precursors are able to efficiently hydrogenate not only a range of indene derivatives (ee’s up to 96%) but also 1,2-dihydronapthalene derivatives and acyclic olefins (ee’s up to 99%), which both constitute the most challenging
用MaxPHOX型配体改性的空气稳定且易于获得的Ir催化剂前体已成功应用于温和的反应条件下具有挑战性的四取代烯烃的不对称加氢反应中。令人欣慰的是,这些催化剂前体不仅能够有效氢化各种茚衍生物(ee的含量高达96%),还可以有效地氢化1,2-二氢萘衍生物和无环烯烃(ee的含量高达99%),它们都是最具挑战性的底物为了这个转变。