作者:Binnewirtz, Ralf-Juergen、Klingenberger, Helmut、Welte, Rainer、Paetzold, Peter
DOI:——
日期:——
Evidence for a Concerted [4 + 1]- Cycloaddition between Electron-Rich Carbenes and Electron-Deficient Dienes
作者:Luc Boisvert、Francis Beaumier、Claude Spino
DOI:10.1021/ol702172t
日期:2007.12.1
Results from the thermal reactions of deuterated dienes 12-15 provide evidence of the concertedness of the [4 + l]-cycloaddition between dimethoxycarbene and electron-deficient dienes. Other evidence suggests that the main pathway is a concerted [4 + 11]-cycloaddition rather than a cyclopropanation followed by a vinylcyclopropane rearrangement. Ionic pathways can become competitive when steric or geometrical constraints are present.
BINNEWIRTZ, R. -J.;KLINGENBERGER, H.;WELTE, R.;PAETZOLD, P., CHEM. BER., 1983, 116, N 4, 1271-1284
作者:BINNEWIRTZ, R. -J.、KLINGENBERGER, H.、WELTE, R.、PAETZOLD, P.