三乙酰氧基硼氢化钠 → (R)-3-(4-Benzyloxy-2,6-dichloro-benzyl)-1-(4,5,6,7-tetrahydro-1H-indazol-4-yl)-pyrrolidin-2-one

HRID 1013816

反应方程式

HRID 1013816 反应方程式
[CH2:1]([C@@H:8]1CO[C:10](=O)[N:9]1[C:14](=[O:36])[C@H:15]([CH2:19][C:20]1[C:25]([Cl:26])=[CH:24][C:23]([O:27][CH2:28][C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)=[CH:22][C:21]=1[Cl:35])[CH2:16]C=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4]C=1.[NH:37]1C2CCCC(N)C=2C=[N:38]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.ClCCl>[CH2:28]([O:27][C:23]1[CH:22]=[C:21]([Cl:35])[C:20]([CH2:19][C@@H:15]2[CH2:16][CH2:10][N:9]([CH:8]3[CH2:1][CH2:2][CH2:7][C:6]4[NH:38][N:37]=[CH:4][C:5]3=4)[C:14]2=[O:36])=[C:25]([Cl:26])[CH:24]=1)[C:29]1[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=1

参与物

6

反应物 3

HCID 5049666三乙酰氧基硼氢化钠HCID 219419414,5,6,7-tetrahydro-1H-indazol-4-amineHCID 59515429(R)-4-((R)-benzyl-2-oxo-oxazolidin-3-yl)-3-(4-benzyloxy-2,6-dichloro-benzyl)-4-oxo-butyraldehyde

产物 1

HCID 67316437(R)-3-(4-Benzyloxy-2,6-dichloro-benzyl)-1-(4,5,6,7-tetrahydro-1H-indazol-4-yl)-pyrrolidin-2-one

试剂、催化剂与溶剂 2

HCID 111,2-二氯乙烷溶剂HCID 6344二氯甲烷溶剂

实验过程

To a solution of (R)-4-((R)-4-Benzyl-2-oxo-oxazolidin-3-yl)-3-(4-benzyloxy-2,6-dichloro-benzyl)-4-oxo-butyraldehyde, Preparation 38, (2 g, 3.81 mmol) in DCE (75 mL) at room temperature, add 4,5,6,7-tetrahydro-1H-indazol-4-ylamine (0.66 g, 4.77 mmol) and sodium triacetoxy borohydride (2.42 g, 11.45 mmol). Stir the reaction at room temperature for 12 h and at 50° C. for 1 hour. Cool the reaction, dilute with dichloromethane and wash with water. After drying the organic layer over sodium sulfate, filter and concentrate under vacuum. Purify the residue by silica gel chromatography with 50% ethyl acetate in hexane to 100% ethyl acetate to afford 1.32 g of the title compound. MS (m/z): 470 (M+).

后处理

  1. customthe reaction at room temperature for 12 h
  2. temperatureCool
  3. customthe reaction
  4. washwash with water
  5. dry with materialAfter drying the organic layer over sodium sulfate
  6. filtrationfilter
  7. concentrationconcentrate under vacuum
  8. customPurify the residue by silica gel chromatography with 50% ethyl acetate in hexane to 100% ethyl acetate

来源与证据

ORD记录
ord-b516a6128eae4847a16bfe4ccc848c63
来源数据集
uspto-grants-2011_07
专利号
US07981918B2

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