A modified method is reported for the conversion of unsaturated sulfonamides into their cyclic saturated counterparts. This method utilises a single palladium catalyst for an intramolecular Heck reaction and subsequent transfer hydrogenation, which is achieved in one-pot following the addition of ammonium formate. Accordingly, a range of fourteen structural variations are reported and under optimal
报道了一种改进的方法,用于将不饱和磺酰胺转化为其环状饱和对应物。该方法利用一种单一的
钯催化剂进行分子内Heck反应和随后的转移氢化,这是在添加
甲酸铵后一锅内完成的。因此,报道了十四种结构变化的范围,并且在最佳条件下以通常良好至优异的产率生成加合物。值得注意的是,在化合物28和29的情况下,可以实现对差异取代的二烯的区分,并且仅观察到该过程在空间上受阻更大的前体32下失败。