The stereoselective formation of cyanohydrin 4 was achieved by radical cyclization-oxygen trapping reaction of 5 into an intramolecular acrylic nitrile moiety. The cyanohydrin was used for ring closure reaction with a tosylate, providing the bicyclic systems 1 and 2 with a trans ring fusion.
通过 5 与分子内
丙烯腈分子的自由基环化-氧捕获反应,立体选择性地形成了
氰醇 4。
氰醇用于与
对甲苯磺酸盐进行闭环反应,从而产生了反式环融合的双环体系 1 和 2。