... (4) Stowell, J. C. "Carbanions in Organic Synthesis"; Wiley ... 7 R' = H, R2 = o-MeC6H4 u 4 J 5 ... pioneering work in multianion chemistry,1° have only re- cently seen substantial methodological development.6J1J2 The vinylogous carbanions 2 have similarly attracted considerable ...