Water → (E)-6-(2-(tert-butoxycarbonylamino)phenylamino)-6-oxohex-3-enyl methanesulfonate

Participants

Reaction Steps

To a solution of (E)-tert-butyl 2-(6-hydroxyhex-3-enamido)phenylcarbamate (10) (398 mg, 1 mmol) and triethylamine (151.5 mg, 1.5 mmol) in DCM (10 mL) was added methanesulfonyl chloride (127.6 mg, 1.1 mmol) at 0° C. and stirred for 0.5 hour, then the reaction was stirred at room temperature for 1 hr, then water (10 mL) was added, the mixture was extracted with DCM (3×20 mL), the combined organic layers were washed with brine, dried over Na2SO4 and concentrated to give the desired compound of (E)-6-(2-(tert-butoxycarbonylamino)phenylamino)-6-oxohex-3-enyl methanesulfonate (358 mg, yield 90%) as oil after purification by column chromatography (eluent: PE:EA=10:1). LC-MS found 399 (M+H)+.

Provenance & Evidence