Dynamic Effects on [3,3] and [1,3] Shifts of 6-Methylenebicyclo[3.2.0]hept-2-ene
作者:Christopher P. Suhrada、Cenk Selçuki、Maja Nendel、Carina Cannizzaro、K. N. Houk、Peter-Jürgen Rissing、Dirk Baumann、Dieter Hasselmann
DOI:10.1002/anie.200500027
日期:2005.6.6
A vinylcyclobutane substrate designed as a cyclopropylcarbinyl radical probe
作者:Phyllis A. Leber、Ryan M. Bell、Carlton W. Christie、Joseph A. Mohrbacher III
DOI:10.1039/c3ob00033h
日期:——
Appending a spirocyclopropane linkage to bicyclo[3.2.0]hept-2-ene is achieved by selective kinetic cyclopropanation of 6-methylenebicyclo[3.2.0]hept-2-ene. The resultant vinylcyclobutane undergoes [1,3] migration as the dominant thermal process. A minor cyclopropylcarbinyl (CPC) rearrangement product clearly implicates a diradical transition structure. The presence and absence of other potential thermal