Lithium Hydroxide → 4-(Methoxycarbonyl)cyclohexane-1-carboxylic acid

HRID 349099

반응식

HRID 349099 반응식
[CH:1]1([C:11]([O:13]C)=[O:12])[CH2:6][CH2:5][CH:4]([C:7]([O:9][CH3:10])=[O:8])[CH2:3][CH2:2]1.[OH-].[Li+]>O1CCCC1.CO.O>[CH3:10][O:9][C:7]([CH:4]1[CH2:5][CH2:6][CH:1]([C:11]([OH:13])=[O:12])[CH2:2][CH2:3]1)=[O:8]

참가 물질

4

반응물 2

HCID 3939Lithium HydroxideHCID 7198Dimethyl 1,4-cyclohexanedicarboxylate

생성물 1

HCID 2968504-(Methoxycarbonyl)cyclohexane-1-carboxylic acid수율 77.9%

시약·촉매·용매 1

HCID 21892291Methanol tetrahydrofuran water용매

실험 절차

To a stirred solution of dimethyl cyclohexane-1,4-dicarboxylate (10.2 g, 51 mmol) in a mixture of 2:1:1 tetrahydrofuran/methanol/water (52 mL) was added lithium hydroxide (2.13 g, 51 mmol). The reaction mixture was stirred at room temperature for 18 h. The solvent was removed under reduced pressure and the residue was partitioned between diethyl ether and water. The aqueous layer was acidified to pH 4 with 1 N hydrochloric acid, and the precipitate collected, and dried under vacuum to afford 4-(methoxycarbonyl)cyclohexanecarboxylic acid (7.4 g): 1H NMR (300 MHz, CDCl3) δ 3.68 (s, 3H), 2.33–2.27 (m, 2H), 2.11–2.06 (m, 4H), 1.50–1.43 (m, 4H).

후처리

  1. customThe solvent was removed under reduced pressure
  2. customthe residue was partitioned between diethyl ether and water
  3. customthe precipitate collected
  4. customdried under vacuum

출처 및 근거

ORD 기록
ord-43304f0fdc8f4b1eb1d65be76a622463
출처 데이터셋
uspto-grants-2007_02
특허 번호
US07176242B2

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