Cyclopropanation of. alpha.,. beta.-unsaturated carbonyl compounds and nitriles with diazo compounds. The nature of the involvement of transition-metal promoters

MP Doyle, RL Dorow, WH Tamblyn

Index: Doyle, Michael P.; Dorow, Roberta L.; Tamblyn, William H. Journal of Organic Chemistry, 1982 , vol. 47, # 21 p. 4059 - 4068

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Citation Number: 68

Abstract

In the presence of molybdenum hexacarbonyl or molybdenum (I1) acetate, ethyl diazoacetate and a-diazoacetophenone react with a,@-unsaturated carbonyl compounds and nitriles to form derivative cyclopropane and vinyl CH insertion products. In the abrrence of these promoters or in the presence of catalytic amounts of pyridine, 2-pyrazolines are the major or sole reaction products. Kinetic investigations for reactions between ethyl ...