Methoxyacetyl chloride → 2,2-Dimethylpropyl 4-[4-(5-methoxy-1,2,4-oxadiazol-3-yl)pyridin-2-yl]-1-piperazinecarboxylate

HRID 421824노트

반응식

HRID 421824 반응식
[NH2:1][C:2](=[N:23][OH:24])[C:3]1[CH:8]=[CH:7][N:6]=[C:5]([N:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][CH2:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:16])[CH2:11][CH2:10]2)[CH:4]=1.[CH3:25][O:26][CH2:27]C(Cl)=O>N1C=CC=CC=1.C(OCC)(=O)C>[CH3:25][O:26][C:27]1[O:24][N:23]=[C:2]([C:3]2[CH:8]=[CH:7][N:6]=[C:5]([N:9]3[CH2:14][CH2:13][N:12]([C:15]([O:17][CH2:18][C:19]([CH3:20])([CH3:21])[CH3:22])=[O:16])[CH2:11][CH2:10]3)[CH:4]=2)[N:1]=1

참가 물질

5

반응물 2

HCID 96623Methoxyacetyl chlorideHCID 1363817182,2-Dimethylpropyl 4-{4-[amino(hydroxyimino)methyl]pyridin-2-yl}-1-piperazinecarboxylate

생성물 1

HCID 119928012,2-Dimethylpropyl 4-[4-(5-methoxy-1,2,4-oxadiazol-3-yl)pyridin-2-yl]-1-piperazinecarboxylate

시약·촉매·용매 2

HCID 1049Pyridine용매HCID 8857Ethyl Acetate용매

실험 절차

2,2-Dimethylpropyl 4-{4-[amino(hydroxyimino)methyl]pyridin-2-yl}piperazine-1-carboxylate (84 mg) obtained in Example 26-1) was dissolved in pyridine (2 mL), and methoxyacetyl chloride (0.035 mL) was added thereto and heated under reflux for 90 minutes. The reaction liquid was diluted with ethyl acetate, washed with 1 N hydrochloric acid, aqueous saturated sodium hydrogencarbonate solution and saturated saline water, and dried with anhydrous sodium sulfate. The solvent was evaporated away, and the resulting residue was isolated and purified through silica gel column chromatography (hexane/ethyl acetate=7/3) to obtain 54 mg of the entitled compound as a colorless oil.

후처리

  1. temperatureheated
  2. temperatureunder reflux for 90 minutes
  3. customThe reaction liquid
  4. washwashed with 1 N hydrochloric acid, aqueous saturated sodium hydrogencarbonate solution and saturated saline water
  5. dry with materialdried with anhydrous sodium sulfate
  6. customThe solvent was evaporated away
  7. customthe resulting residue was isolated
  8. custompurified through silica gel column chromatography (hexane/ethyl acetate=7/3)

출처 및 근거

ORD 기록
ord-722705bd20904383a923353b668d5155
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08101618B2

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