A Surprising reduction in aromaticity on cyclopentanone fusion of a bridged annulene. is this a mills-nixon effect?
作者:Reginald H. Mitchell、Danny Y.K. Lau
DOI:10.1016/0040-4039(95)02012-e
日期:1995.12
bonds between the rings, substantially reduces the magnetic ring current, while in a transoid relationship with an even number of bonds, no reduction occurs. This is interpreted as a bond fixation effect, possibly caused in part by the relative ring strain of endocyclic cyclopentenones.