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Water → 4-(7-Benzenesulfonyl-2,3-dihydro-benzo[1,4]oxazin-4-yl)-piperidine-1-carboxylic acid tert-butyl ester

HRID 2224078
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HRID 2224078 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15]2[CH:20]=[CH:19][C:18]([S:21]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)(=[O:23])=[O:22])=[CH:17][C:16]=2[O:30][CH2:31][CH2:32]Cl)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[I-].[Na+].[H-].[Na+].O>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[C:15]3[CH:20]=[CH:19][C:18]([S:21]([C:24]4[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=4)(=[O:23])=[O:22])=[CH:17][C:16]=3[O:30][CH2:31][CH2:32]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]
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HCID 962WaterHCID 5238Sodium IodideHCID 24758Sodium hydrideHCID 684332104-[4-Benzenesulfonyl-2-(2-chloro-ethoxy)-phenylamino]-piperidine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 684330714-(7-Benzenesulfonyl-2,3-dihydro-benzo[1,4]oxazin-4-yl)-piperidine-1-carboxylic acid tert-butyl ester수율 68.4%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

To a solution of 4-[4-benzenesulfonyl-2-(2-chloro-ethoxy)-phenylamino]-piperidine-1-carboxylic acid tert-butyl ester (0.175 g, 0.354 mmol) in 0.500 mL anhydrous DMF was added sodium iodide (2.0 mg, cat) followed by sodium hydride (17 mg. of a 60% dispersion in mineral oil, 0.424 mmol) in 3 portions. The reaction mixture was stirred at room temperature for 2 hours, added to 50 mL water, and then extracted twice with 50 mL ethyl acetate. The organic fraction was washed with 50 mL brine, dried over sodium sulfate, then concentrated in vacuo. The resulting crude oil was purified by flash chromatography (10%-40% ethyl acetate in hexanes) to give 0.111 g (0.242 mmol, 68%) of 4-(7-benzenesulfonyl-2,3-dihydro-benzo[1,4]oxazin-4-yl)-piperidine-1-carboxylic acid tert-butyl ester.

후처리

  1. extractionextracted twice with 50 mL ethyl acetate
  2. washThe organic fraction was washed with 50 mL brine
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe resulting crude oil was purified by flash chromatography (10%-40% ethyl acetate in hexanes)

출처 및 근거

ORD 기록
ord-45a7cc9b100f4fb9b7eb7e104e9a9faf
출처 데이터셋
uspto-grants-2008_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07378415B2

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