3-氯苯甲酸 → 4-[4-(4-Fluorophenyl)-1,1-dimethylcyclopenta-2,4-dien-3-yl]benzenesulfonamide

HRID 36967

反应方程式

HRID 36967 反应方程式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH2:12][C:11]([CH3:14])([CH3:13])[CH2:10][C:9]=2[C:15]2[CH:20]=[CH:19][C:18]([S:21]([NH2:24])(=[O:23])=[O:22])=[CH:17][CH:16]=2)=[CH:4][CH:3]=1.ClC1C=C(C=CC=1)C(OO)=O.ClC1C=C(C=CC=1)C(O)=O.C([O-])(=O)C.[Na+]>ClCCl.C(O)(=O)C.O>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([C:15]3[CH:16]=[CH:17][C:18]([S:21]([NH2:24])(=[O:22])=[O:23])=[CH:19][CH:20]=3)=[CH:10][C:11]([CH3:14])([CH3:13])[CH:12]=2)=[CH:4][CH:3]=1

参与物

8

反应物 4

HCID 4473-氯苯甲酸HCID 70297间氯过氧苯甲酸HCID 517045醋酸钠HCID 102690884-[2(4-Fluorophenyl)-4,4-dimethylcyclopenten-1-yl)benzenesulfonamide

产物 1

HCID 101545054-[4-(4-Fluorophenyl)-1,1-dimethylcyclopenta-2,4-dien-3-yl]benzenesulfonamide收率 67%

试剂、催化剂与溶剂 3

HCID 176醋酸溶剂HCID 962聚[6-[4-(4-氰基苯基)苯氧基]己基甲基丙烯酸酯]溶剂HCID 6344二氯甲烷溶剂

实验过程

A solution of 1.0 g (2.89 mmol) of 4-[2-(4-fluorophenyl)-4,4-dimethylcyclopenten-1yl)benzenesulfonamide (from Step 2) in 20 mL of dichloromethane was treated with 800 mg (80% peroxyacid, 3.7 mmol) of m-chloroperoxybenzoic acid (MCPBA). The reaction was stirred at ambient temperature for 3 hours, washed with aqueous saturated sodium bisulfite, dried (MgSO4), and concentrated in vacuo to give a mixture of desired expoxide intermediate and m-chlorobenzoic acid; this crude mixture in 15 mL of acetic acid and 2 mL of water was subsequently treated with 1.0 g (12.2 mmol) of sodium acetate and stirred at 80° C. for 15 hours. The reaction mixture was cooled to ambient temperature and concentrated in vacuo. The residue was partitioned between water and ethyl acetate; the organic phase was washed with aqueous saturated sodiun bicarbonate, water, brine, dried (MgSO4), and reconcentrated in vacuo. Purification by silica gel chromatography gave 665 mg (67%) of 4-[4-(4-fluorophenyl)-1,1-dimethylcyclopenta-2,4-dien-3-yl]benzenesulfonamide as a colorless solid: mp 163.5°-164.5° C. (dec); NMR (CDCl3) d 1.33 (s, 6H), 4.83 (br s, 2H), 6.34 (d, J=2 Hz, 1H), 6.45 (d, J=2 Hz, 1H), 6.94 (t, J=9 Hz, 2H), 7.00-7.20 (m, 2H), 7.25 (d, J=8 Hz, 2H), 7.78 (d, J=8 Hz, 2H).

后处理

  1. washwashed with aqueous saturated sodium bisulfite
  2. dry with materialdried (MgSO4)
  3. concentrationconcentrated in vacuo
  4. customto give
  5. stirringstirred at 80° C. for 15 hours
  6. temperatureThe reaction mixture was cooled to ambient temperature
  7. concentrationconcentrated in vacuo
  8. customThe residue was partitioned between water and ethyl acetate
  9. washthe organic phase was washed with aqueous saturated sodiun bicarbonate, water, brine
  10. dry with materialdried (MgSO4)
  11. customPurification by silica gel chromatography

来源与证据

ORD记录
ord-97954d74e57d4b73baee858bcd527947
来源数据集
uspto-grants-1995_05
专利号
US05418254

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