m-Chloroperbenzoic acid → 2-tert-Butyl-4-({3-[(1-oxidopyridin-3-yl)oxy]propyl}amino)-5-phenylisothiazol-3(2H)-one 1,1-dioxide

HRID 2422047노트

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HRID 2422047 반응식
[C:1]([N:5]1[C:9](=[O:10])[C:8]([NH:11][CH2:12][CH2:13][CH2:14][O:15][C:16]2[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=2)=[C:7]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[S:6]1(=[O:29])=[O:28])([CH3:4])([CH3:3])[CH3:2].C1C=C(Cl)C=C(C(OO)=[O:38])C=1>C(Cl)Cl>[C:1]([N:5]1[C:9](=[O:10])[C:8]([NH:11][CH2:12][CH2:13][CH2:14][O:15][C:16]2[CH:17]=[N+:18]([O-:38])[CH:19]=[CH:20][CH:21]=2)=[C:7]([C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=2)[S:6]1(=[O:28])=[O:29])([CH3:4])([CH3:2])[CH3:3]

참가 물질

4

반응물 2

HCID 70297m-Chloroperbenzoic acidHCID 115317542-tert-Butyl-5-phenyl-4-{[3-(pyridin-3-yloxy)propyl]amino}isothiazol-3(2H)-one 1,1-dioxide

생성물 1

HCID 116044182-tert-Butyl-4-({3-[(1-oxidopyridin-3-yl)oxy]propyl}amino)-5-phenylisothiazol-3(2H)-one 1,1-dioxide수율 76%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

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온도
0 °C

실험 절차

2-tert-Butyl-5-phenyl-4-{[3-(pyridin-3-yloxy)propyl]amino}isothiazol-3(2H)-one 1,1-dioxide (Example 5) (0.202 g, 0.49 mmol) was dissolved in dry DCM (15 ml) and cooled to 0° C. with an icebath. mCPBA (70%) (0.120 g, 0.53 mmol) was added and the icebath was removed and the reaction mixture was allowed to reach rt. After stirring for 2 h the reaction mixture was extracted with saturated aqueous NaHCO3 solution (20 ml) and brine (20 ml). The organic phase was dried (Na2SO4), filtered and evaporated. The residue was purified by silica gel column chromatography using a 10:90 mixture of heptane and EtOAc and then DCM:MeOH 97:3 as eluant, to give the title compound (0.160 g, 76%). 1H NMR (500 MHz, CDCl3): δ 7.90-7.83 (m, 2H), 7.51-7.37 (m, 5H), 7.16-7.09 (m, 1H), 6.80-6.74 (m, 1H), 5.68-5.57 (m, 1H), 3.85-3.76 (m, 2H), 3.09-3.02 (m, 2H), 1.85-1.76 (m, 2H), 1.70 (s, 9H); 13C NMR (125 MHz, CDCl3): δ 159.8, 157.0, 135.1, 133.0, 131.8, 129.9, 128.9, 128.2, 125.7, 125.2, 113.5, 107.6, 67.0, 61.8, 60.6, 41.7, 32.1, 28.8, 27.8, 22.9; Mass Spectrum: M−H+ 432.

후처리

  1. customthe icebath was removed
  2. customto reach rt
  3. extractionwas extracted with saturated aqueous NaHCO3 solution (20 ml) and brine (20 ml)
  4. dry with materialThe organic phase was dried (Na2SO4)
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by silica gel column chromatography
  8. additiona 10:90 mixture of heptane and EtOAc

출처 및 근거

ORD 기록
ord-eac2f32c253f4b3fbe0dff239ff527f1
출처 데이터셋
uspto-grants-2011_06
특허 번호
US07960380B2

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