4-Methylmorpholine → HCID 58566698, compound

Participants

Reaction Steps

A solution of 2,2-dimethyl-5-(1H-tetrazol-1-yl)-2,3-dihydrobenzofuran-7-carboxylic acid (677) (135 mg, 0.519 mmol), N-methylmorpholine (57 μL, 0.519 mmol), and tetrahydrofuran (10 mL) at 0° C. was added isobutylchloroformate (68 μL, 0.519 mmol) and stirred for 2 hours. Sodium borohydride (58.9 mg, 1.56 mmol) in water (3 mL) was added and stirred for 1 hour and at room temperature for an additional 1 hour. The reaction was concentrated in vacuo and water was added. The aqueous phase was extracted with ethyl acetate and the combined organic layers dried over sodium sulfate, filtered and concentrated in vacuo. The crude compound was purified by flash column chromatography on silica gel with hexanes and EtOAc (60%) to afford (2,2-dimethyl-5-(1H-tetrazol-1-yl)-2,3-dihydrobenzofuran-7-yl)methanol (678) (77.8 mg, 61%).

Provenance & Evidence