Novel ring expansion of cyclopentanones to seven membered rings
作者:Masakazu Tanaka、Hiroshi Suemune、Kiyoshi Sakai
DOI:10.1016/s0040-4039(00)82030-4
日期:1988.1
By treatment with BF3/ethyleneglycol, cyclopentanones with the carbonyl function at the C3-position of α-side chain undergo the ring cleavage to build up the seven membered rings, and this novel ringexpansion was applied to the synthesis of bulnesol.