Triacetoxyperiodinane → (S)-benzyl 3-(tert-butoxycarbonylamino)-5-oxopiperidine-1-carboxylate

反応式

[C:1]([O:5][C:6]([NH:8][C@H:9]1[CH2:14][C@@H:13]([OH:15])[CH2:12][N:11]([C:16]([O:18][CH2:19][C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)=[O:17])[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>ClCCl.C(OCC)(=O)C>[C:1]([O:5][C:6]([NH:8][C@H:9]1[CH2:14][C:13](=[O:15])[CH2:12][N:11]([C:16]([O:18][CH2:19][C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)=[O:17])[CH2:10]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

実験手順

To a solution of (3S,5R)-benzyl 3-(tert-butoxycarbonylamino)-5-hydroxypiperidine-1-carboxylate (1 eq) in 10 mL dichloromethane was added Dess-Martin periodinane (1.2 eq) at room temperature. The reaction mixture was stirred at that temperature overnight. The mixture was diluted with ethyl acetate, washed with brine, then dried over anhydrous MgSO4, filtered, and concentrated in vacuo. The crude residue was purified by flash chromatography (EtOAc:hexanes=1:2) to yield (S)-benzyl 3-(tert-butoxycarbonylamino)-5-oxopiperidine-1-carboxylate (81%). LC/MS (m/z): 249.1 (MH+-100), Rt: 0.83 min. HPLC: Rt: 3.26 min.