Reactions of 1-R-2,4,6-trinitrobenenes (R = alkyl, protected aldehyde, aminocarbonyl, cyano groups, or isoxazole ring) with thiol salts were investigated. In most cases, these reactions gave a mixture of minor para and major ortho substitution products. Reactions of N,N-disubstituted 2,4,6-trinitrobenzamides with S-,O-, and N-nucleophiles afforded products of substitution of the p-nitro group exclusively
研究了1-R-2,4,6-三
硝基苯(R =烷基,受保护的醛,
氨基羰基,
氰基或
异恶唑环)与
硫醇盐的反应。在大多数情况下,这些反应产生少量的对位和主要的邻位取代产物。N,N-二取代的2,4,6-三
硝基苯甲酰胺与S-,O-和N-亲核试剂的反应仅提供了对硝基取代的产物。发现1-
氰基-2,4,6-三
硝基苯具有最高的反应性和最低的选择性:所有三个硝基都可以使用过量的
硫醇盐取代。2-R-4,6-
二硝基苯甲酰胺在相似条件下无区域选择性,可生成对位和邻位异构体的1:1混合物。