Organosulfur- or Organoselenium-Induced Intramolecular Cycloaddition of β-Allenic α-Difluoromethylenephosphonic Acid Monoesters: Synthesis of Novel Cyclic Phosphate Mimics
作者:Jin-Tao Liu、Yun Lin
DOI:10.1055/s-2006-948204
日期:2006.9
Novel cyclicphosphate mimics, gamma-organosulfur or organoselenium substituted alpha-difluoromethylenephostones were synthesized in good yields with high regioselectivity under mild conditions by the electrophilic cyclization of beta-allenic alpha-difluoromethylenephosphonic acid monoesters induced by ArSCl or ArSeCl. The reaction represents the first example of an intramolecular addition of phosphonic
A facile method to construct cyclic α,α-difluoromethylenephosphonate—A novel cyclic phosphate mimic
作者:Yun Lin、Jin-Tao Liu
DOI:10.1016/j.jfluchem.2011.02.014
日期:2011.5
A facile and efficient synthesis of cyclic alpha,alpha-difluoromethylenephosphonates by halogen-induced intramolecular cyclization of beta-allenic alpha,alpha-difluoromethylenephosphonates is described. The protocol gives multi-substituted six-membered phosphonates with high regioselectivity, providing a new entry to the cyclic phosphate mimics which is still an unexplored but promising area. (C) 2011 Elsevier B.V. All rights reserved.