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 from bromomalononitrile 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.
描述了由溴丙二腈和亚烷基氰基乙酸酯合成3,3-二烷基-和3-芳基-1,2,2-三氰基环丙烷甲酸乙酯的一般方法。当可能存在立体异构体产物时,所获得的主要的且有时是排他的异构体具有较大的C-3取代基和在转位的乙氧基羰基。