2-Amino-2-methyl-1-propanol → Tert-butyl 2-(1-hydroxy-2-methylpropan-2-yl)hydrazine-1-carboxylate

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A solution of N-(tert-butoxycarbonyl)-3-(4-cyanophenyl)-oxaziridine (CAS #: 150884-56-3, purchased from Acros, 5.17 g, 21 mmol) in anhydrous diethyl ether (20 mL) was added to a solution of 2-amino-2-methyl-propan-1-ol (1.78 g, 20 mmol) in anhydrous diethyl ether (20 mL) at room temperature. The reaction mixture stirred at room temperature for 2 hours. Diethyl ether was evaporated under reduced pressure and the residue was purified by flash chromatography eluting with a gradient of 3-5% methanol/dichloromethane to give N′-(2-hydroxy-1,1-dimethyl-ethyl)-hydrazinecarboxylic acid tert-butyl ester (1.63 g, 40%) which was used without further purification.

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