KAWABATA NARIYOSHI; TANIMOTO MASAMI, TETRAHEDRON, 1980, 36, NO 24, 3517-3522
作者:KAWABATA NARIYOSHI、 TANIMOTO MASAMI
DOI:——
日期:——
Synthesis of gem-dialkoxycarbonylcyclopropane derivatives from olefins by the reaction with dibromomalonic esters and copper in dimethyl sulphoxide
作者:Nariyoshi Kawabata、Masami Tanimoto
DOI:10.1016/0040-4020(80)88047-1
日期:1980.1
A novel method for the synthesis of gem-dialkoxycarbonylcyclopropane derivatives is reported which involves the reaction of olefins with dibromomalonic esters and Cu in dimethyl sulphoxide. The reaction was applicable to a wide range of olefins and proceeded smoothly at moderate temperature to give the cyclopropane derivatives often in good yields. Cu was converted to Cu(II) bromide during the reaction