Ammonium Chloride → HCID 12015832, compound

Participants

Reaction Steps

To a stirring solution of 1-Boc-6-aminoindazole (100 mg, 0.43 mmol) in tetrahydrofuran (2 mL) at 0° C. was added a solution of potassium bis(trimethylsilyl)amide (180 mg, 0.90 mmol) in tetrahydrofuran (2 mL). After 15 min, this solution was transferred via syringe to a stirring solution of 2-(4-t-butylphenyl)-4-oxo-4H-thieno[3,2-d][1,3]oxazine (122 mg, 0.43 mmol) in tetrahydrofuran (2 mL). After 45 min, saturated ammonium chloride was added, the mixture was diluted with ethyl acetate, and the phases were separated. The aqueous phase was extracted 3 times with ethyl acetate. The combined ethyl acetate extracts were then washed once with brine, dried over magnesium sulfate, filtered, and the solvent removed in vacuo. The crude product was purified by column chromatography over silica gel using an eluent of 40% ethyl acetate in hexane and 50% ethyl acetate in hexane to afford the product (34 mg, 15%).

Provenance & Evidence