作者:David S. Wulfman、Bradford G. McGibboney、Earl K. Steffen、Nguyen V. Thinh、Robert S. McDaniel、Billy W. Peace
DOI:10.1016/0040-4020(76)80080-4
日期:1976.1
olefins employing homogeneous and heterogeneous catalyzed decompositions of dimethyl diazomalonate by copper and silver salts. The cyclopropanations are stereospecific and are accompanied by appreciable amounts of allylic C-H insertion products which could formally be derived from allylic radical or ionic intermediates. Cyclopropanation with cis 2-heptene proceeds 5.20 times as fast as with the trans isomer
给出了将双-甲氧基羰基卡宾添加到许多烯烃中的实验和结构细节,这些均采用重氮丙二酸二甲酯通过铜和银盐的均相和非均相催化分解。环丙烷是立体特异性的,并伴有可正式从烯丙基自由基或离子中间体衍生的可观数量的烯丙基CH插入产物。当催化剂为亚碘(亚磷酸三甲酯)铜(I)时,用顺式2-庚烯进行环丙烷化的速度是反式异构体的5.20倍,并且环己烯的反应速度是1-甲基环己烯的4.90倍。