Highly Selective and Robust Palladium‐Catalyzed Carbon–Carbon Coupling between Allyl Alcohols and Aldehydes via Transient Allylboronic Acids

The highly regio‐ and stereoselective coupling of allyl alcohols with aldehydes could be achieved with 5 mol‐% of SeCSe pincer complex catalyst and p‐toluenesulfonic acid in the presence of diboronic acid. The transformations have a broad synthetic scope, and the high yields were obtained without the use of an inert atmosphere and carefully dried solvents.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)