Bromine → HCID 59769448、化合物

HRID 32241ノート

反応式

HRID 32241 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[CH:20]2[CH2:25][C:24]([CH3:27])([CH3:26])[CH2:23][C:22]([CH3:29])([CH3:28])[CH2:21]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([O-])(=O)C.[Na+].[Br:35]Br.S([O-])([O-])(=O)=S.[Na+].[Na+]>C(OCC)(=O)C.O.CO>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14]2[CH:19]=[CH:18][C:17]([Br:35])=[CH:16][C:15]=2[CH:20]2[CH2:25][C:24]([CH3:27])([CH3:26])[CH2:23][C:22]([CH3:29])([CH3:28])[CH2:21]2)[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

8

反応物 4

HCID 24408BromineHCID 24477Sodium ThiosulfateHCID 517045Sodium AcetateHCID 597693964-[2-(3,3,5,5-Tetramethylcyclohexyl)phenyl]piperazine-1-carboxylic acid t-butyl ester

生成物 1

HCID 59769448HCID 59769448、化合物収率 77.1%

試薬・触媒・溶媒 3

HCID 887Methanol溶媒HCID 962Water溶媒HCID 8857Ethyl Acetate溶媒2 回

実験手順

To a mixture of 4-[2-(3,3,5,5-tetramethylcyclohexyl)phenyl]piperazine-1-carboxylic acid t-butyl ester (2.93 g, 7.31 mmol) produced in Example (8a), sodium acetate (6 g, 73.14 mmol) and methanol (50 mL) was added bromine (0.37 mL, 7.22 mmol), followed by stirring for 20 minutes at room temperature under a nitrogen atmosphere. Saturated aqueous solution of sodium thiosulfate, ethyl acetate and water were added to the reaction mixture and extraction was performed with ethyl acetate. The separated organic layer was washed with brine and then dried over anhydrous sodium sulfate. The desiccant was filtered off and the filtrate was concentrated under reduced pressure. The resultant residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give 2.67 g of the title compound as colorless crystals.

後処理

  1. washThe separated organic layer was washed with brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationThe desiccant was filtered off
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe resultant residue was purified by silica gel column chromatography (ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-7190b6c6b3414407b56c3ebf6893e306
出典データセット
uspto-grants-2008_09
特許番号
US07425554B2

反応ノート

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