1,3-Dipolar cycloreversion of the 1-pyrazoline from 5-diazo-10, 11-dihydro-5H-dibenzo[a,d]cycloheptene and 2,5-dimethyl-1,4-benzoquinone
作者:Takumi Oshima、Toshikazu Nagai
DOI:10.1039/c39940002787
日期:——
Thermolysis of the pyrazoline formed form 5-diazo-10,11-dihydro-5H-dibenzo[a,d]cycloheptene and 2,5-dimethyl-1,4-benzoquinone gives the component diazoalkane and quinone via 1,3-dipolar cycloreversion, in competition with nitrogen extrusion to give the cyclopropanederivative.