4-phenyl isomer (67%). With bifunctional reagents, saturated tricyclic or partially saturated tetra- and pentacyclic hetero derivatives containing an isoindolone moiety were prepared. The cis → trans isomerization in the ring closures is promoted by enolization and by the two close-lying phenyl groups. The stereostructures of the products were determined via 1 H and 13 C NMR spectroscopy.
摘要 苯与顺式-4-
环己烯-1,2-二
羧酸酐的加成生成c-2-苯甲酰基-t-5-苯基-r-1-
环己烷甲酸(72%),或者在另一个反应中,4-苯基异构体(67%)。用双功能试剂制备含有异
吲哚酮部分的饱和
三环或部分饱和四环和五环杂衍
生物。烯醇化和两个紧密相连的苯基促进了闭环中的顺式→反式异构化。产物的立体结构通过 1 H 和 13 C NMR 光谱确定。