An Access to Chiral Phthalides: Enantioselective Synthesis of Escitalopram
作者:Rosaria Schettini、Antonella Dentoni Litta、Arianna Sinibaldi、Assunta D'Amato、Alicja M. Araszczuk、Marina Sicignano、Letizia Pagliarulo、Simone Naddeo、Giovanni Pierri、Francesco De Riccardis、Irene Izzo、Giorgio Della Sala
DOI:10.1002/adsc.202400007
日期:2024.4.9
A method for the asymmetric synthesis of phthalides containing a stereogenic γ-carbon has been described. The protocol, based on the arylogous Michael addition to chiral alkenoyl oxazolidinones catalyzed by a crown ether under phase-transfer conditions does not require anhydrous conditions and uses commercially available materials. A complete syn-stereocontrol is achieved and facial diastereoselectivities