Conjugative and homoconjugative effects in 2-heterobicyclo[3.2.1]octa-3,6-dienes
作者:Paul Barraclough、Sevin Bilgic、J. Brian Pedley、Antony J. Rogers、Douglas W. Young
DOI:10.1016/0040-4020(79)85014-0
日期:1979.1
The 1H-NMR, 13C-NMR and photoelectron spectra of a variety of 2-heterobicyclo[3.2.1]octa-3,6-dienes 6 give evidence of conjugative and homoeonjugative effects in these compounds, but there is no suggestion from the data of any special contribution from the (4n+2)π neutral bishomoaromatic system. Reaction of the dienes6 with TCNE invariably yielded the product of [2+2] addition in cases where a fully