Hydrochloric Acid → 3-[(4S,5S)-3-benzyloxycarbonyl-2,2-dimethyl-4-isobutyloxazolidin-5-yl]-2-ethyl-2-propenoic acid

HRID 1651017Notes

Reaction equation

HRID 1651017 reaction equation
[CH2:1]([O:8][C:9]([N:11]1[C@@H:15]([CH2:16][CH:17]([CH3:19])[CH3:18])[C@H:14]([CH:20]=[C:21]([CH2:27][CH3:28])[C:22]([O:24]CC)=[O:23])[O:13][C:12]1([CH3:30])[CH3:29])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.O>C(O)C.O.[OH-].[K+]>[CH2:1]([O:8][C:9]([N:11]1[C@@H:15]([CH2:16][CH:17]([CH3:19])[CH3:18])[C@H:14]([CH:20]=[C:21]([CH2:27][CH3:28])[C:22]([OH:24])=[O:23])[O:13][C:12]1([CH3:30])[CH3:29])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 962WaterHCID 70040836ethyl 3-[(4S,5S)-3-benzyloxycarbonyl-2,2-dimethyl-4-isobutyloxazolidin-5-yl]-2-ethyl-2-propenoate

Product 1

HCID 571587953-[(4S,5S)-3-benzyloxycarbonyl-2,2-dimethyl-4-isobutyloxazolidin-5-yl]-2-ethyl-2-propenoic acid

Reagents, catalysts & solvents 2

HCID 14797Potassium HydroxideSolventHCID 19096565Water ethanolSolvent

Procedure

517 mg of ethyl 3-[(4S,5S)-3-benzyloxycarbonyl-2,2-dimethyl-4-isobutyloxazolidin-5-yl]-2-ethyl-2-propenoate was dissolved in 3.10 ml of an ethanol/water (9/1) solution of 2N potassium hydroxide, and the mixture was stirred for 3 hours at room temperature. The reaction solution was adjusted to pH 2 with 1N hydrochloric acid under cooling with ice. Then, 24 ml of water was added thereto and extracted three times with 20 ml of ethyl acetate. The organic layer was washed sequentially with water and a saturated sodium chloride aqueous solution, and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to obtain 3-[(4S,5S)-3-benzyloxycarbonyl-2,2-dimethyl-4-isobutyloxazolidin-5-yl]-2-ethyl-2propenoic acid as a colorless oily substance.

Workup

  1. temperatureunder cooling with ice
  2. extractionextracted three times with 20 ml of ethyl acetate
  3. washThe organic layer was washed sequentially with water
  4. dry with materiala saturated sodium chloride aqueous solution, and dried over anhydrous sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure

Sources & evidence

ORD record
ord-910163755a344ba6b81f914995f78ea5
Source dataset
uspto-grants-1990_05
Patent number
US04927565

Reaction notes

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