作者:Kenneth B. Wiberg、Michael G. Matturro、Paul J. Okarma、Mark E. Jason、William P. Dailey、George J. Burgmaier、William F. Bailey、Philip Warner
DOI:10.1016/s0040-4020(01)87609-2
日期:——
The preparation of bicyclo [2.2.0]hex- 1(4)-ene (1) via ring expansion of a cyclopropylcarbene or the dehalogenation of 1-bromo-4-chlorobicyclo[2.2.0]hexane is described. It is one of the most reactive of the alkenes which may be observed at room temperature. Its reactions, including dimerization and cycloaddition reactions, are described. The latter lead to convenient preparations of [m.2.2]propellanes
Synthesis and Properties of the Strained Alkene Perfluorobicyclo[2.2.0]hex-1(4)-ene
作者:Christopher P. Junk、Yigang He、Yin Zhang、Joshua R. Smith、Rolf Gleiter、Steven R. Kass、Jerry P. Jasinski、David M. Lemal
DOI:10.1021/jo502456h
日期:2015.2.6
and diiodide precursors and trapped in situ. retro-Diels–Alder reaction of its adduct with N-benzylpyrrole has made the alkene available in high yield and purity. In sharp contrast to its extremely labile hydrocarbon counterpart, the fluoroalkene is very stable yet highly reactive. Its characterization includes its electron affinity, photoelectron spectrum, and the previously reported structure determination
Accuracy of Calculations of Heats of Reduction/Hydrogenation: Application to Some Small Ring Systems
作者:Kenneth B. Wiberg
DOI:10.1021/jo302118b
日期:2012.11.16
satisfactory than the others. Large basis sets are usually needed in order to reproduce experiments. Some C–C bond hydrogenolysis reactions also have been examined including those of bicycloalkanes and propellanes. In addition, the dimerization of the remarkably strained bicyclo[2.2.0]hex(1,4)ene was studied. The reaction forming a pentacyclic propellane was calculated to have ΔH = −57 kcal/mol, and the cleavage
作者:Kenneth B. Wiberg、Michael G. Matturro、Paul J. Okarma、Mark E. Jason
DOI:10.1021/ja00319a047
日期:1984.4
On prepare le compose du titre, membre le plus simple de la serie des «superphanes» par dimerisation du bicyclo [2.2.0] hexene-1(4). L'analyse RX indique une distance de 2,40 A entre les doublesliaisons. On discute le mecanisme de la dimerisation et on decrit les proprietes chimiques du compose obtenu
在准备 le compose du titre,membre le plus simple de la serie des «superphanes» par dimerisation du bicyclo [2.2.0] hexene-1(4)。L'analysis RX indique une distance de 2,40 A entre les doubles liaisons. 论二聚化的机械论等论 描述 les proprietes chimiques du compose obtenu
WIBERG, K. B.;MATTURRO, M. G., TETRAHEDRON LETT., 1981, 22, N 36, 3481-3484