N-Arylnitrilium salts 1 react with isocyanates 2 to give salts 3 of 4(3H)-quinazolinones 4, from which compounds 4 can be obtained with base. A metathesis of an isocyanate with a nitrilium salt is reported.
N-Arylnitrilium 盐 1 与
异氰酸酯 2 反应生成 4(3H)-
喹唑啉酮 4 的盐 3,用碱可从中得到化合物 4。据报道,一种
异氰酸酯与一种硝基鎓盐发生了复分解反应。