The conformation and rearrangement reactions of derivatives of 10,11-dihydrodibenzoxepin
作者:T. Kametani、S. Shibuya、W. D. Ollis
DOI:10.1039/j39680002877
日期:——
The conformational behaviour of 10-substituted 10,11-dihydrodibenz[b,f]oxepins (V—XVI) has been investigated by n.m.r. spectroscopy. The favoured conformation is shown to be that in which the 10-substituent has the quasi-equatorial conformation with respect to the seven-membered ring. The stereo-electronic requirements for the observed rearrangement reactions of 10-chloro-10,11-dihydrodibenz[b,f]oxepins
通过核磁共振波谱研究了10-取代的10,11-二氢二苯并[ b,f ]氧杂环丁烷(V-XVI)的构象行为。偏爱的构象显示为其中十个取代基相对于七元环具有准赤道构象的构象。相对于这种有利的构象,考虑了所观察到的10-氯-10,11-二氢二苯并[ b,f ]氧杂环庚烷重整反应以产生9-氯甲基二苯并氧杂蒽的立体电子学要求。