Acetonitrile → HCID 178523263, compound

Participants

Reaction Steps

A stirred solution of 2-(1H-indazol-3-yl)-1H-benzoimidazole-5-carboxylic acid (2-cyano-ethyl)-amide [150 mg, Example 246(s)] and azidotributyltin (2 ml) was heated at 95° C. for 24 hours. The reaction was cooled to ambient temperature and stirred for 2 hours with acetonitrile (20 ml), tetrahydrofuran (10 ml) and acetic acid (20 ml). The reaction mixture was washed with iso-hexane (6×80 ml) and concentrated in vacuo. The residue was subjected to preparative HPLC to give 2-(1H-indazol-3-yl)-1H-benzoimidazole-5-carboxylic acid [2-(2H-tetrazol-5-yl)-ethyl]-amide (35.9 mg) as a brown solid.

Provenance & Evidence