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Hydrazine → 4-(2-Fluoro-4-methylphenylamino)-1,3-dimethyl-7,8-dihydro-1H,6H-pyrido[2,3-d]pyridazine-2,5-dione

HRID 1510510
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HRID 1510510 반응식
C([O:3][C:4]([C:6]1[C:11]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([CH3:19])=[CH:15][C:14]=2[F:20])=[C:10]([CH3:21])[C:9](=[O:22])[N:8]([CH3:23])[C:7]=1[CH2:24]Br)=O)C.[NH2:26][NH2:27]>CO.CCOC(C)=O>[F:20][C:14]1[CH:15]=[C:16]([CH3:19])[CH:17]=[CH:18][C:13]=1[NH:12][C:11]1[C:6]2[C:4](=[O:3])[NH:27][NH:26][CH2:24][C:7]=2[N:8]([CH3:23])[C:9](=[O:22])[C:10]=1[CH3:21]
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참가 물질

5

반응물 2

HCID 9321HydrazineHCID 666734472-Bromomethyl-4-(2-fluoro-4-methylphenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl ester

생성물 1

HCID 576368604-(2-Fluoro-4-methylphenylamino)-1,3-dimethyl-7,8-dihydro-1H,6H-pyrido[2,3-d]pyridazine-2,5-dione

시약·촉매·용매 2

HCID 887Methanol용매HCID 8857Ethyl Acetate용매

실험 절차

To a solution of 2-bromomethyl-4-(2-fluoro-4-methylphenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl ester (1 equivalent) in MeOH is added hydrazine (1.10 equivalents). After stirring for 2 hours at room temperature, the reaction mixture is heated to 40° C. for 8 hours. The reaction mixture is diluted with EtOAc and washed with water. The organic layer is dried over MgSO4, filtered, and concentrated in vacuo to give the crude material that is purified by trituration or flash column chromatography to afford the desired product as necessary.

후처리

  1. temperaturethe reaction mixture is heated to 40° C. for 8 hours
  2. washwashed with water
  3. dry with materialThe organic layer is dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customto give the crude material that
  7. customis purified by trituration or flash column chromatography

출처 및 근거

ORD 기록
ord-79dc39ec48974d8f98a08e4cd6940f9a
출처 데이터셋
uspto-grants-2012_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08211920B2

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