SYNTHESES AND PROPERTIES OF TRIMETHYLBISDEHYDRO[15]ANNULENONE AND ITS BENZANNELATED DERIVATIVES
作者:Juro Ojima、Kazuyo Wada、Keiko Kanazawa
DOI:10.1246/cl.1979.1035
日期:1979.9.5
Syntheses of 5,10,15-trimethyl- 6,10,15-dimethylbenzo[d]-6,8-bisdehydro[15]annulenone 7,2,12-dimethylbenzo[f]-8,10-bisdehydro[15]annulenone 8, and 15-methyldibenzo[d,j]-6,8-bisdehydro[15]annulenone 9 are described. As observed for the corresponding[17]annulenone, the 1H-NMR spectra of these annulenones suggest that the skeleton of the bisdehydro[15]annulenone of this type is more planar and less strained
5,10,15-三甲基-6,10,15-二甲基苯并[d]-6,8-双脱氢[15]环烯酮7,2,12-二甲基苯并[f]-8,10-双脱氢[15]环烯酮的合成8和15-甲基二苯并[d,j]-6,8-双脱氢[15]环烯酮9被描述。正如对相应的 [17] 环烯酮所观察到的那样,这些环烯酮的 1H-NMR 谱表明,这种类型的双脱氢 [15] 环烯酮的骨架比 [13] 环烯酮的骨架更平坦且应变更小。