Lithium Hydroxide → 4-Benzyl-5-(2-carboxy-4-oxo-cyclohexylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

HRID 987918

반응식

HRID 987918 반응식
[C:1]([O:5][C:6]([N:8]1[CH:12]([CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH:11]([CH2:20][CH:21]2[CH2:26][CH2:25][C:24](=[O:27])[CH2:23][CH:22]2[C:28]([O:30]C)=[O:29])[O:10][C:9]1([CH3:33])[CH3:32])=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH-].[Li+]>O1CCCC1.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH:12]([CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH:11]([CH2:20][CH:21]2[CH2:26][CH2:25][C:24](=[O:27])[CH2:23][CH:22]2[C:28]([OH:30])=[O:29])[O:10][C:9]1([CH3:33])[CH3:32])=[O:7])([CH3:4])([CH3:2])[CH3:3]

참가 물질

5

반응물 2

HCID 3939Lithium HydroxideHCID 698547414-Benzyl-5-(2-methoxycarbonyl-4-oxo-cyclohexylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

생성물 1

HCID 700346664-Benzyl-5-(2-carboxy-4-oxo-cyclohexylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester수율 95%

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of 4-benzyl-5-(2-methoxycarbonyl-4-oxo-cyclohexylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester (1.81 g, 3.94 mmol) in dry tetrahydrofuran (24 ml) was treated with 1M aqueous lithium hydroxide solution (8 ml 7.88 mM). The resulting mixture was stirred at room temperature for 6 hours then diluted with ethyl acetate, washed with a 1:1 mixture of brine and 1 M hydrochloric acid, dried (anhydrous magnesium sulfate) and concentrated in vacuo to give 4-benzyl-5-(2-carboxy-4-oxo-cyclohexylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester (1.66 g, 95%) as a yellow oil which was used in the next step without further purification.

후처리

  1. washwashed with a 1:1 mixture of brine and 1 M hydrochloric acid
  2. dry with materialdried (anhydrous magnesium sulfate)
  3. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-cdc57423c70841e8b9141bbf981ccef5
출처 데이터셋
uspto-grants-2003_10
특허 번호
US06632826B1

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