m-Chloroperbenzoic acid → 3-[2-(Methylsulfinyl)-4-pyrimidinyl]-2-(3-nitrophenyl)pyrazolo[1,5-a]pyridine

HRID 1159875노트

반응식

HRID 1159875 반응식
[CH3:1][S:2][C:3]1[N:8]=[C:7]([C:9]2[C:10]([C:18]3[CH:23]=[CH:22][CH:21]=[C:20]([N+:24]([O-:26])=[O:25])[CH:19]=3)=[N:11][N:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=23)[CH:6]=[CH:5][N:4]=1.C1C=C(Cl)C=C(C(OO)=[O:35])C=1>C(Cl)Cl>[CH3:1][S:2]([C:3]1[N:8]=[C:7]([C:9]2[C:10]([C:18]3[CH:23]=[CH:22][CH:21]=[C:20]([N+:24]([O-:26])=[O:25])[CH:19]=3)=[N:11][N:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=23)[CH:6]=[CH:5][N:4]=1)=[O:35]

참가 물질

4

반응물 2

HCID 70297m-Chloroperbenzoic acidHCID 595114283-[2-(Methylthio)-4-pyrimidinyl]-2-(3-nitrophenyl)pyrazolo[1,5-a]pyridine

생성물 1

HCID 595114013-[2-(Methylsulfinyl)-4-pyrimidinyl]-2-(3-nitrophenyl)pyrazolo[1,5-a]pyridine수율 66.1%

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

To a solution of 3-[2-(methylthio)-4-pyrimidinyl]-2-(3-nitrophenyl)pyrazolo[1,5-a]pyridine (0.82 g, 2.26 mmol) in DCM (22 mL) is added a solution of 50% mCPBA (818 mg, 2.37 mmol) in DCM (6 mL) through an addition funnel. The reaction is stirred for 10 min and saturated aqueous NaHCO3 and the layers are separated. The aqueous layer is extracted with DCM, and the combined organic layers are dried over MgSO4, filtered and concentrated. The residue is purified by silica gel chromatography (50% EtOAC/hexanes eluant) to provide the product (567 mg) as a yellow solid. 1H NMR (400 MHz, d6-DMSO) δ 8.93 (d, 1H, J=6.8), 8.68 (d, 1H, J=5.6), 8.57 (d, 1H, J=8.8), 8.44 (s, 1H, 8.37-8.35 (m, 1H, 8.08 (d, 1H, J=7.6), 7.78 (t, 1H, J=8.0), 7.61-7.65 (m, 1H), 7.21-7.26 (m, 2H), 2.84 (s, 3H).

후처리

  1. customsaturated aqueous NaHCO3 and the layers are separated
  2. extractionThe aqueous layer is extracted with DCM
  3. dry with materialthe combined organic layers are dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue is purified by silica gel chromatography (50% EtOAC/hexanes eluant)

출처 및 근거

ORD 기록
ord-370984af655b4a56aade1074c284cee3
출처 데이터셋
uspto-grants-2010_10
특허 번호
US07812022B2

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