An improved protocol for Petasis reaction of 2-pyridinecarbaldehydes
摘要:
A highly efficient and improved method has been developed for Petasis reactions of various 2-pyridinecarbaldehydes with secondary amines and boronic acids under catalyst-free conditions. The desired products are obtained in up to 96% yield in refluxed acetonitrile. (C) 2010 Elsevier Ltd. All rights reserved.