Sodium hydride → tert-butyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-methoxy-benzyloxy)-piperidine-1-carboxylate

HRID 1004937노트

반응식

HRID 1004937 반응식
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][CH:9]2[OH:21])=[CH:4][CH:3]=1.[CH3:22][O:23][C:24]1[CH:31]=[CH:30][C:27]([CH2:28]Cl)=[CH:26][CH:25]=1.[H-].[Na+]>CN(C)C=O>[F:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:18])([CH3:20])[CH3:19])=[O:15])[CH2:10][CH:9]2[O:21][CH2:28][C:27]2[CH:30]=[CH:31][C:24]([O:23][CH3:22])=[CH:25][CH:26]=2)=[CH:6][CH:7]=1

참가 물질

5

반응물 3

HCID 24758Sodium hydrideHCID 699934-Methyloxybenzyl chlorideHCID 45074236Tert-butyl 4-(4-fluorophenyl)-3-hydroxypiperidine-1-carboxylate

생성물 1

HCID 86604390tert-butyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-methoxy-benzyloxy)-piperidine-1-carboxylate수율 90%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

200 mg (0.68 mmol) of tert-butyl (3RS,4RS)-4-(4-fluorophenyl)-3-hydroxy-piperidine-1-carboxylate and 159 mg (1.01 mmol) of 4-methoxybenzyl chloride were dissolved in 3 ml of dimethylformamide. 40 mg (1.01 mmol) of a 60% sodium hydride suspension were added and the mixture was stirred at room temperature for 3 hours. Subsequently, the reaction mixture was partitioned between ethyl acetate and water, the organic phase was dried over magnesium sulphate and finally the solvent was removed under reduced pressure. The crude product was purified by chromatography on silica gel with a 1:3 mixture of ethyl acetate and hexane as the eluent. There were obtained 250 mg (90% of theory) of tert-butyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-methoxy-benzyloxy)-piperidine-1-carboxylate as a light yellow oil; MS: 358 (M-C4H9)+.

후처리

  1. customSubsequently, the reaction mixture was partitioned between ethyl acetate and water
  2. dry with materialthe organic phase was dried over magnesium sulphate
  3. customfinally the solvent was removed under reduced pressure
  4. customThe crude product was purified by chromatography on silica gel with a 1:3 mixture of ethyl acetate and hexane as the eluent

출처 및 근거

ORD 기록
ord-3228eb8773504e0383e958b7be944c20
출처 데이터셋
uspto-grants-2000_04
특허 번호
US06051712

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