反应详情

The title compound was prepared as in Example X from N-methyl 4-chlorobenzimidoyl chloride (6.07 g, 32.3 mmole), chlorosulfonic acid (0.46 g, 4.0 mmole), methyl 1,4-dimethyl-1H-pyrrole-2-acetate (6.64 g, 39.8 mmole), and 70% perchloric acid (5.5 g, 38.3 mmole) to yield 9.3 g (69%) of a bright yellow solid, m.p. 168°-171° C. (dec).