Palladium-catalyzed carbonylation of yne esters leading to gamma-alkylidene alpha,beta-unsaturated gamma-lactones.
[reaction: see text] The reaction of yne esters with carbon monoxide (1 atm) in the presence of palladium complexes gives bicyclic unsaturated lactone derivatives in good to high yields. The 2-pyridinyloxy group is a good leaving group among leaving groups examined.
Harada
Yasuyuki
Y
Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
Fukumoto
Yoshiya
Y
Chatani
Naoto
N
D000475:Alkenes / Q000737:chemistry*; D002384:Catalysis; D004952:Esters / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry*; D015394:Molecular Structure; D010165:Palladium / Q000737:chemistry*
D000475:Alkenes; D004952:Esters; D007783:Lactones; D010165:Palladium