Acrolein Diethyl Acetal: A Three-Carbon Homologating Reagent for the Synthesis of β-Arylpropanoates and Cinnamaldehydes by Heck Reaction Catalyzed by a Kaiser Oxime Resin Derived Palladacycle
作者:Emilio Alacid、Carmen Nájera
DOI:10.1002/ejoc.200800047
日期:2008.6
A polymer palladacycle derived from Kaiser oxime resin was used as a source of palladium(0) in the chemoselective Heck reaction of acrolein diethyl acetal with aryl halides under ligand-free conditions. The use of typical Heck conditions afforded 3-arylpropionic esters, and the process can be directed to the synthesis of cinnamaldehydes under Cacchi conditions. These processes take place with rather