Enantioselective S−H Insertion Reactions of α‐Carbonyl Sulfoxonium Ylides
作者:Patrícia B. Momo、Alexandria N. Leveille、Elliot H. E. Farrar、Matthew N. Grayson、Anita E. Mattson、Antonio C. B. Burtoloso
DOI:10.1002/anie.202005563
日期:2020.9
The first example of enantioselectiveS−Hinsertionreactions of sulfoxoniumylides is reported. Under the influence of thiourea catalysis, excellent levels of enantiocontrol (up to 95 % ee) and yields (up to 97 %) are achieved for 31 examples in S−Hinsertionreactions of aryl thiols and α‐carbonylsulfoxoniumylides.
Hydrogen transfer reduction of alpha-sulfonylaldehydes using HCOOH-Et3N system as hydrogen source and (S,S)-TsDPEN-based Ru(II) as catalyst proceeds with dynamic kinetic resolution, providing optically active p-sulfonyl primary alcohols in moderate-to-good yields and up to 90% ee. (c) 2008 Elsevier Ltd. All rights reserved.