反应详情

The title compound was prepared as in Example X from N-methyl 4-nitrobenzimidoyl chloride (2.0 g, 10.1 mmole) in alcohol free chloroform (30 ml), chlorosulfonic acid (0.12 g, 1 mmole), methyl 1,4-dimethyl-1H-pyrrole-2-acetate (1.68 g, 10.06 mmole) and 70% perchloric acid (1.57 g, 11 mmole) to yield 2.77 g (65%) of a yellow solid, m.p. 108° C. (dec).