A new variant of the Reformatsky-Claisen rearrangement is described. The reaction of substituted allyl alpha-bromoacetates with indium and indium(III) chloride under ultrasonication provides a general entry into the functionalized synthon. (C) 2011 Elsevier Ltd. All rights reserved.
A new variant of Reformatsky-Claisen rearrangement is described. The reaction of an allyl α-bromo ester in the presence of indium(I) chloride provides a general entry into the functionalized synthon.
A 1,3,2‐Diazaphospholene‐Catalyzed Reductive Claisen Rearrangement
作者:John H. Reed、Pavel A. Donets、Solène Miaskiewicz、Nicolai Cramer
DOI:10.1002/anie.201904411
日期:2019.6.24
catalysts for very mild reductive Claisenrearrangements. The method is tolerant towards a wide variety of functional groups and operates at ambient temperature. Besides being enantiospecific for substrates with existing stereogenic centers, the diastereoselectivity can be switched by varying solvents and DAP catalysts. The reaction kinetics show direct rearrangements of O‐bound phospholene enolates