Hydrogen Peroxide → HCID 54757315, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of N-(4-cyano-3-methyl-isothiazol-5-yl)-3-methyl-butyramide (method 24) (8 g, 35.8 mmol) in 30% aqueous NH4OH (200 mL), was added dropwise 100 mL of hydrogen peroxide at r.t. After the completion of the addition the reaction mixture was stirred at 60° C. overnight after which the TLC showed the complete disappearance of SM. The reaction mixture was concentrated to 40 mL and extracted with chloroform (3×100 mL). The organic layer was dried (Na2SO4) and concentrated to obtain 3-methyl-5-(3-methyl-butyrylamino)-isothiazole-4-carboxylic acid amide (6.1 g, 71%) as a light yellow solid. 1H NMR (300 MHz) δ 1.03 (d, 6H), 2.24 (m, 1H), 2.43 (d, 2H), 2.69 (s, 3H), 5.98 (bs, 2H), 11.77 (bs, 1H).

Provenance & Evidence