Ammonium Hydroxide → HCID 66658201, compound

Participants

Reaction Conditions

Reaction Steps

Concentrated aqueous ammonium hydroxide solution (3 mL) was added to a solution of Boc-4-(methanesulfonylamino-methyl)-2-nitro-thiophene-3-sulfonyl chloride (3.30 g, 7.59 mmol) in acetonitrile (90 mL) at 0° C. The mixture was stirred at 0° C. for 45 min, and then was partitioned between half-saturated aqueous sodium bicarbonate solution (150 mL) and ethyl acetate (2×150 mL). The combined organic layers were dried over sodium sulfate, filtered and were concentrated in vacuo. Purification of the residue by flash column chromatography (Teledyne Isco RediSep column; 20-90% ethyl acetate in hexanes) afforded the desired product, Boc-4-(methanesulfonylamino-methyl)-2-nitro-thiophene-3-sulfonic acid amide (2.64 g, 6.35 mmol, 84%), as a yellow solid. 1H NMR (400 MHz, CDCl3) δ: 1.54 (9H, s), 3.35 (3H, s), 5.12 (2H, s), 5.81 (2H, bs), 7.61 (1H, s).

Provenance & Evidence