Sodium Hydroxide → 4-{5-[(3,5-Bis-trifluoromethyl-benzyl)-methyl-carbamoyl]-4-o-tolyl-pyridin-2-yl}-piperazine-1-carboxylic acid tert-butyl ester

HRID 352321

반응식

HRID 352321 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:19]=[C:18]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[CH3:26])[C:17]([C:27](=[O:30])[NH:28][CH3:29])=[CH:16][N:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C[Si](C)(C)[N-][Si](C)(C)C.[K+].[F:41][C:42]([F:56])([F:55])[C:43]1[CH:44]=[C:45]([CH:48]=[C:49]([C:51]([F:54])([F:53])[F:52])[CH:50]=1)[CH2:46]Br.[OH-].[Na+]>O1CCCC1.O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:19]=[C:18]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[CH3:26])[C:17]([C:27](=[O:30])[N:28]([CH2:46][C:45]3[CH:48]=[C:49]([C:51]([F:53])([F:54])[F:52])[CH:50]=[C:43]([C:42]([F:41])([F:55])[F:56])[CH:44]=3)[CH3:29])=[CH:16][N:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

참가 물질

7

반응물 4

HCID 14798Sodium HydroxideHCID 1225733,5-Bis(trifluoromethyl)benzyl bromideHCID 3251421Potassium bis(trimethylsilyl)amideHCID 543878244-(5-Methylcarbamoyl-4-o-tolyl-pyridin-2-yl)-piperazine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 98523194-{5-[(3,5-Bis-trifluoromethyl-benzyl)-methyl-carbamoyl]-4-o-tolyl-pyridin-2-yl}-piperazine-1-carboxylic acid tert-butyl ester수율 70.8%

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매2회

실험 절차

To a solution of 6.28 g (15.3 mmol) 4-(5-methylcarbamoyl-4-o-tolyl-pyridin-2-yl)-piperazine-1-carboxylic acid tert-butyl ester in 250 ml tetrahydrofuran 20 ml of a 1 M solution (20 mmol) of potassium hexamethyldisilazide in tetrahydrofuran were added at 0° C. After 30 min, 2.81 ml (15.3 mmol) 3,5-bis(trifluoromethyl)benzyl bromide were added dropwise. The reaction mixture was allowed to warm to room temperature over night. Addition of water and 1 M aqueous sodium hydroxide solution was followed by extraction with three portions of ethyl acetate. The combined organic extracts were dried with sodium sulfate and concentrated. Flash column chromatography gave 6.89 g (70.8%) of the parent compound as a white solid.

후처리

  1. extractionwas followed by extraction with three portions of ethyl acetate
  2. dry with materialThe combined organic extracts were dried with sodium sulfate
  3. concentrationconcentrated

출처 및 근거

ORD 기록
ord-18088ec2d7084d5898e1d84de44fe3dd
출처 데이터셋
uspto-grants-2004_06
특허 번호
US06747026B2

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