Phosphaannulation by Palladium-Catalyzed Carbonylation of C–H Bonds of Phosphonic and Phosphinic Acids
摘要:
An efficient phosphaannulation by Pd-catalyzed carbonylation of C-H bonds of phosphonic and phosphinic acids for the synthesis of oxaphosphorinanone oxides is reported. These compounds are novel phosphorus heterocyclic scaffolds, thus opening a new avenue to sequential C-C/C-O bond formation in one pot.
Phosphaannulation of Aryl- and Benzylphosphonic Acids with Unactivated Alkenes<i>via</i>Palladium-Catalyzed CH Activation/Oxidative Cyclization Reaction
作者:Woo Hyung Jeon、Jeong-Yu Son、Sun-Eung Kim、Phil Ho Lee
DOI:10.1002/adsc.201400793
日期:2015.3.9
An efficient phosphaannulation via palladium(II)‐catalyzed CH activation/oxidative cyclization by the 6‐endo mode is reported for the synthesis of 3‐substituted phosphaisocoumarins from the reaction of arylphosphonic acids with unactivated alkenes under aerobic conditions. Also, α,α‐disubstituted benzylphosphonic acids were phosphaannulated with unactivated alkenes, producing phosphaisochromanones