Vicarious nucleophilic substitution of pyridinium 1-dicyanomethylides with 1-chloromethyl phenyl sulfone gave corresponding 4-substituted derivatives. The dicyanomethylene group was readily eliminated via radical reaction to afford 4-phenylsulfonylmethylpyridines.
1-chloromethyl phenyl sulfone 对 1-二
氰基
甲基吡啶的亲核取代反应产生了相应的 4-取代衍
生物。通过自由基反应,二
氰基亚甲基很容易被消除,从而得到 4-苯磺酰
甲基吡啶。