Phosphorus oxychloride → 3-(3-fluorophenyl)-5-chloro-1H-pyrazolo[4,3-b]pyridine

Participants

Reaction Steps

To 100 mg of 3-(3-fluorophenyl)-1-trityl-1H-pyrazolo[4,3-b]pyridine-4-oxide in toluene was acted phosphorus oxychloride in toluene in the same manner as described in Production example 28, to afford 30 mg of 3-(3-fluorophenyl)-5-chloro-1H-pyrazolo[4,3-b]pyridine described in Example 38 described below as a colorless powder, as well as 60 mg of a crude product of the title compound as a colorless powder.

Provenance & Evidence