FADEL, A.;SALAUEN, J.;CONIA, J. M., TETRAHEDRON, 1983, 39, N 9, 1567-1573
作者:FADEL, A.、SALAUEN, J.、CONIA, J. M.
DOI:——
日期:——
Small ring compounds—XLI
作者:A. Fadel、J. Salaün、J.M. Conia
DOI:10.1016/s0040-4020(01)88564-1
日期:1983.1
Cyclobutene, prepared by base-induced elimination from tosyloxycyclobutane 19 undergoes cycloaddition with ethyl propiolate in the presence of AlCl3 to provide ethyl bicyclo[2.2.0]hex-2-ene-2-carboxylate 20. This cycloadduct at room temperature and in the presence of AlCl3 undergoes forbidden ring opening into ethyl cyclohexa-1,3-diene-2-carboxylate 21. The cycloaddition of cyclobutene with dichloroketene