Acetyl chloride → 2-{[(Benzyloxy)carbonyl]amino}-2-methylpropyl acetate

反応式

[C:1]([NH:11][C:12]([CH3:16])([CH3:15])[CH2:13][OH:14])([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].[C:17](Cl)(=[O:19])[CH3:18].C(N(CC)CC)C>ClCCl>[C:17]([O:14][CH2:13][C:12]([NH:11][C:1]([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2])([CH3:16])[CH3:15])(=[O:19])[CH3:18]

参加物

実験手順

To a dichloromethane solution containing 2.52 g (0.011 mol) 2-carbobenzoxyamino-2-methyl-1-propanol and 1.17 g (0.015 mol) acetyl chloride was added dropwise with stirring 1.11 g (0.011 mol) triethylamine. The reaction was stirred at ambient temperature overnight and the dichloromethane was removed under reduced pressure. The triethylamine hydrochloride residue was triturated in anhydrous ether. Following filtration, the ether was removed under reduced pressure to afford 2.38 g (0.009 mol), 82%, crude 2-carbobenzoxyamino-2-methyl-1-propyl acetate as a pale yellow liquid, pmr (CDCl3) δ 7.2 (s, 5H), 5.4 (bs, 1H), 5.0 (s, 2H), 2.0 (s, 3H) and 1.2 (s, 6H) ppm.