Ammonium Chloride → (5R)-3-[4-(2-Benzyloxy-4-ethyl-phenoxy)-3-fluoro-phenyl]-5-hydroxymethyl-oxazolidin-2-one
Reaction equation
C([O:8][C:9](=[O:35])[NH:10][C:11]1[CH:16]=[CH:15][C:14]([O:17][C:18]2[CH:23]=[CH:22][C:21]([CH2:24][CH3:25])=[CH:20][C:19]=2[O:26][CH2:27][C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)=[C:13]([F:34])[CH:12]=1)C1C=CC=CC=1.C([Li])CCC.[C:41](OC[C@@H]1OC1)(=[O:45])[CH2:42][CH2:43]C.[NH4+].[Cl-]>C1COCC1>[CH2:27]([O:26][C:19]1[CH:20]=[C:21]([CH2:24][CH3:25])[CH:22]=[CH:23][C:18]=1[O:17][C:14]1[CH:15]=[CH:16][C:11]([N:10]2[CH2:43][C@H:42]([CH2:41][OH:45])[O:8][C:9]2=[O:35])=[CH:12][C:13]=1[F:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1Participants
6
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Procedure
To a solution of [4-(2-Benzyloxy-4-ethyl-phenoxy)-3-fluoro-phenyl]-carbamic acid benzyl ester (0.31 mmol; 145 mg), under argon, in dry THF cooled to −78° C., was added n-Butyl lithium 2.3M in THF (0.46 mmol; 200 μL). the reaction mixture was stirred ten minutes and (R)-glycidyl butyrate (0.34 mmol; 48 μL) was added. The reaction was stirred overnight with slow warming to room temperature. The mixture was treated with saturated NH4Cl and extracted with ethyl acetate. Combined organic phases were dried over Na2SO4 and concentrated in vacuo. The title compound (70 mg; 52%) was obtained as . . . after purification by preparative TLC (eluant: dichloromethane/methanol: 95/5).
Workup
- stirringThe reaction was stirred overnight
- extractionextracted with ethyl acetate
- dry with materialCombined organic phases were dried over Na2SO4
- concentrationconcentrated in vacuo
Sources & evidence
- ORD record
- ord-a908948f8e724cf5a8a37a4ed31dd18d
- Source dataset
- uspto-grants-2016_04
- Patent number
- US09309179B2
Reaction notes
Loading…