Hetero diels-alder vs mukaiyama aldol pathways in the reaction of monoactivated dienes and aldehydes. A lewis acid study
作者:M.Teresa Mujica、María M. Afonso、Antonio Galindo、J.Antonio Palenzuela
DOI:10.1016/0040-4020(95)01031-9
日期:1996.2
effect of Lewisacid on the reaction of 2-monoactivated dienes and aldehydes was studied searching for more general reaction conditions than those previously published. It was found that BF3·OEt2 in diethyl ether gave the best yields of Dieis-Alder adducts with good endo/exo selectivities. The Mukaiyama aldol-Michael cyclization pathway which has been reported to occur with this Lewisacid in the reaction