6,7-Dimethylene-2,4-diphenylbicyclo[3.2.1]oct-3-en-2-yl anion. A test for the origin of the unusual properties of the bicyclo[3.2.1]octa-3,6-dien-2-yl anion
摘要:
On the basis of the 13C NMR spectra of the 6,7-dimethylene-2,4-diphenylbicyclo[3.2.1]oct-3-en-2-yl anion 12, which has been prepared in four steps from 2,4-diphenylbicyclo[3.2.1]octa-2,6-diene 7, and the 2,4-diphenylbicyclo[3.2.1]octa-3,6-dien-2-yl anion 11, it seems reasonable to ascribe a bishomoaromatic character to 11.
On the use of<sup>13</sup>C n.m.r. spectroscopy as a tool in detecting long range π-interactions in carbanions
作者:George B. Trimitsis、Paul Zimmerman
DOI:10.1039/c39840001506
日期:——
13Cn.m.r.spectroscopy is not completely reliable as a primary tool for the detection of longrangeπ-interactions in potentially homoconjugatively stabilized carbanions.