反应详情

5,7-Dichloro-3-methyl-1H-indazole was prepared using a procedure similar to that described in Example 98, part a and b, except starting from 2,4-dichloro-6-ethylaniline (2.9 g) that was prepared by chlorination of 6-ethylaniline (10 g) with N-chlorosuccinimide (22 g) in acetonitrile (80 mL).