反应详情

Following the procedure of Example 2, 37.8 g. of 6-(4-chlorophenyl)-2-methyl-2H-pyrazolo[3,4-b]pyridin-4-ol (0.146 mol.) and 165 ml. of phosphorus oxychloride yield 35.1 g. (86%) of 4-chloro-6-(4-chlorophenyl)-2-methyl-2H-pyrazolo[3,4-b]pyridine, recrystallized from ethanol; m.p. 177°-179°.

1. custom(86%) of 4-chloro-6-(4-chlorophenyl)-2-methyl-2H-pyrazolo[3,4-b]pyridine, recrystallized from ethanol