Ammonium Hydroxide → 4-Chloro-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Conditions

Reaction Steps

4-chloro-7-azaindole 24 was synthesized by reacting 1H-Pyrrolo[2,3-b]pyridine 7-oxide 23 with a chlorinating agent (e.g. POCl3) neat as described by Schneller, S. W.; Luo, Jiann-Kuan. J. Org. Chem. 1980, 45:4045-4048. The resulting solution after heating for 3-5 h at elevated temperatures (100-150° C.) was neutralized with a base (e.g. NH4OH) until a solid precipitated. The solid was isolated by filtration.

Provenance & Evidence