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

HRID 1858558ノート

反応式

HRID 1858558 の反応式
[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

参加物

5

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

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)+.

後処理

  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

出典と根拠

ORDレコード
ord-a0e73991a7a746e3873a192c5b0b6fa4
出典データセット
uspto-grants-2000_11
特許番号
US06150526

反応ノート

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