中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4,4',4''-(1-乙烯基-2-亚基)三苯甲醚 | 1,1,2-tris(4-methoxyphenyl)ethene | 7109-27-5 | C23H22O3 | 346.426 |
The product from the reaction of trianisylvinyl-2-13C bromide (3—Br-2-13C) with HOAc–AgOAc or with CF3COOH–CF3COOAg was converted to 1,2,2-trianisylethanol-x-13C (4—x-13C) and examined for isotopic scrambling by the use of relative intensity ratios in the c.m.r. spectra with the CH3O absorption as the internal standard, or by the intensities of the 13C satellites in the p.m.r. spectra. About 20 and 50% rearrangements of the 13C-label from C-2 to C-1 were found, respectively, for the acetolysis and trifluoroacetolysis. The results are in accord with the suggestion that there may be a competition between 1,2-aryl shifts in the triarylvinyl cation or ion-pair and the reaction of the ion with solvent to give product.