Reaction of vinylidenecyclopropanes with aromatic imines in the presence of Lewis acids
作者:A. V. Stepakov、A. G. Larina、A. P. Molchanov、L. V. Stepakova、G. L. Starova、R. R. Kostikov
DOI:10.1134/s1070428007010034
日期:2007.1
1-Methyl-2-(2-methylpropenylidene)-1-phenylcyclopropane, 7-(2-methylpropenylidene)bicyclo[4.1.0]heptane, and (Z)-9-(2-methylpropenylidene)bicyclo[6.1.0]non-4-ene react with N-benzylideneanilines in the presence of boron trifluoride-ether complex to give pyrrolidine derivatives. Reactions of 1-methyl-1-phenyl-2-diphenylvinylidenecyclopropane with N-benzylideneanilines in the presence of BF3 center dot Et2O, Yb(OTf)(3), or Sc(OTf)(3) lead to the formation of substituted 1,2,3,4-tetrahydroquinolines. 7-Diphenylvinylidenebicyclo[4.1.0]heptane in the presence of BF3 center dot Et2O undergoes isomerization into 5-phenyl-8,9,10,11-tetrahydro-7H-cyclohepta[a]naphthalene.