Synthesis of ethyl 1,2,2-tricyanocyclopropanecarboxylates from bromomalononitrile and ylidenecyanoacetate
作者:Yoon Chin Kim、Harold Hart
DOI:10.1039/j39690002409
日期:——
A general synthesis for ethyl 3,3-dialkyl- and 3-aryl-1,2,2-tricyanocyclopropanecarboxylates frombromomalononitrile and ylidenecyanoacetates is described. When stereoisomeric products are possible, the predominant and sometimes exclusive isomer obtained has the larger C-3 substituent and the ethoxycarbonyl group in the trans-position.
Electrochemical transformation of cyanoacetic ester and alkylidenecyanoacetic esters into 3-substituted 1,2-dicyanocyclopropane-1,2-dicarboxylates
作者:M. N. Elinson、S. K. Feducovich、S. G. Bushuev、D. V. Pashchenko、G. I. Nikishin
DOI:10.1007/bf02503485
日期:1998.6
Electrolysis of cyanoaceticester and alkylidenecyanoacetic esters in an undivided cell in the presence of mediators (alkali metal halides) gives rise to 3-substituted, 1,2-dicyanocyclopropane-1,2-dicarboxylates in 60–95% yields.