Palladium Nanoparticle-Catalyzed C−N Bond Formation. A Highly Regio- and Stereoselective Allylic Amination by Allyl Acetates
摘要:
Palladium nanoparticles, generated in situ from the reaction of palladium(II) chloride, have been demonstrated to be an efficient catalyst for C-N bond formation. A variety of aliphatic and aromatic amines have been allylated by substituted and unsubstituted allyl acetates in high yields by using palladium nanoparticles in the presence of a base without any ligand. The allylations are highly regio- and stereoselective.
Palladium(0) Nanoparticle Catalyzed Cross-Coupling of Allyl Acetates and Aryl and Vinyl Siloxanes
作者:Raju Dey、Kalicharan Chattopadhyay、Brindaban C. Ranu
DOI:10.1021/jo802214m
日期:2008.12.5
The cross-coupling of allyl acetates and aryl and vinyl siloxanes proceeds readily by the catalysis of in situ generated palladium(0) nanoparticles. The reactions are stereoselective, and (E)-coupling products are obtained both from cis and trans allyl acetates. The coupling with vinyl siloxanes provides a novel protocol for the synthesis of 1,4-pentadienes.