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Piperonal → N-(4-chloro-3-methyl-5-isoxazolyl)-N-(methoxyethoxymethyl)-2-(alpha-hydroxy-3,4-(methylenedioxy) benzyl]-thieno [2,3-b]pyridine-3-sulfonamide

HRID 1265015
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HRID 1265015 반응식
[Cl:1][C:2]1[C:3]([CH3:26])=[N:4][O:5][C:6]=1[N:7]([CH2:20][O:21][CH2:22][CH2:23][O:24][CH3:25])[S:8]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[CH:17][CH:18]=2)[S:13][CH:12]=1)(=[O:10])=[O:9].[Li]C(C)(C)C.[CH:32]1[C:37]([CH:38]=[O:39])=[CH:36][C:35]2[O:40][CH2:41][O:42][C:34]=2[CH:33]=1>C1COCC1>[Cl:1][C:2]1[C:3]([CH3:26])=[N:4][O:5][C:6]=1[N:7]([CH2:20][O:21][CH2:22][CH2:23][O:24][CH3:25])[S:8]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[CH:17][CH:18]=2)[S:13][C:12]=1[CH:38]([OH:39])[C:37]1[CH:32]=[CH:33][C:34]2[O:42][CH2:41][O:40][C:35]=2[CH:36]=1)(=[O:9])=[O:10]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 8438PiperonalHCID 18614049N-(4-chloro-3-methyl-5-isoxazolyl)-N-(methoxyethoxy-methyl)thieno[2,3-b]pyridine-3-sulfonamideHCID 178418306HCID 178418306, 화합물

생성물 1

HCID 54238526N-(4-chloro-3-methyl-5-isoxazolyl)-N-(methoxyethoxymethyl)-2-(alpha-hydroxy-3,4-(methylenedioxy) benzyl]-thieno [2,3-b]pyridine-3-sulfonamide수율 44%

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매
2회

실험 절차

To a solution of N-(4-chloro-3-methyl-5-isoxazolyl)-N-(methoxyethoxymethyl)thieno [2,3-b]pyridine-3-sulfonamide (0.25 g, 0.61 mmoles) in THF (10 ml) at −78° C. was added t-BuLi (1.7 M, 0.46 ml, 0.79 mmoles). Thirty minutes later piperonal (0.14 g, 0.91 mmoles) in THF (2 ml) was added via cannula, as a solution. The cooling bath was removed and the reaction was stirred 1 hr. at ambient temperature and then diluted with EtOAc (50 ml) and washed with H2O (2×75 ml). The organic layer was dried (MgSO4), filtered and concentrated. Flash chromatography (40% EtOAc/hexanes) provided 0.15 g (44%) of the title compound as a white foamy solid.

후처리

  1. customThe cooling bath was removed
  2. additionat ambient temperature and then diluted with EtOAc (50 ml)
  3. washwashed with H2O (2×75 ml)
  4. dry with materialThe organic layer was dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated

출처 및 근거

ORD 기록
ord-b7b8ba89389948f9b4fe33bbcd541aa7
출처 데이터셋
uspto-grants-2003_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06545014B2

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