Decarboxylative olefination of potassium benzoates via bimetallic catalysis strategy
摘要:
A novel synthesis of styrene derivatives through decaroxylative olefination of potassium benzoates with alkynes using Pd(2)dba(3)/CuBr as catalyst system has been developed. The protocol proceeded smoothly and in most cases Z-alkene was the main product. Electron-rich potassium benzoates reacted more efficiently than those of electron-deficient substrates. Heteroaromatic and electron-deficient aryl alkynes were not consistent with this transformation.[GRAPHICS].