Reaction of Ph3P+C-HR with R1CHO at -78 Deg yielded Ph3P+CHRCHR1O- (I). Subsequent addn. of BuLi gave Ph3P+C-RCHR1O- Li+ (II). Reaction of II with HCl and hydrolysis with tert-BuOK gave .apprx.80% RCH:CHR1 (R = Et, Ph, or C5H11; R1 = Me, Et, or C5H11). Whe ...
1970