N-bromobutanimide → 3-(Bromomethyl)-6-phenylpyridazine

HRID 241276

반응식

HRID 241276 반응식
[CH3:1][C:2]1[N:3]=[N:4][C:5]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[CH:6][CH:7]=1.C1C(=O)N([Br:21])C(=O)C1.N(C(C)(CC(C)C)C#N)=NC(C)(CC(C)C)C#N>ClCCCl>[Br:21][CH2:1][C:2]1[N:3]=[N:4][C:5]([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)=[CH:6][CH:7]=1

참가 물질

5

반응물 3

HCID 67184N-bromobutanimideHCID 915372,2'-Azobis(2,4-dimethylvaleronitrile)2회HCID 113787443-Methyl-6-phenylpyridazine

생성물 1

HCID 667174453-(Bromomethyl)-6-phenylpyridazine수율 33.2%

시약·촉매·용매 1

HCID 111,2-Dichloroethane용매

반응 조건

온도
80 °C

실험 절차

To a solution of 3-methyl-6-phenylpyridazine (925 mg, 5.43 mmol) in 1,2-dichloroethane (28 ml) were added NBS (1.07 g, 6.01 mmol) and 2,2′-azobis(2,4-dimethylvaleronitrile) (67.3 mg, 0.271 mmol), followed by stirring at 80° C. for 1 hour. During the reaction, 2,2′-azobis(2,4-dimethylvaleronitrile)(134 mg, 0.540 mmol) was additionally added in two portions. After completion of the reaction, the reaction solution was concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography (eluent; hexane:ethyl acetate=5:1→0:1 (V/V)), and fractions containing the desired compound were concentrated under reduced pressure to afford the title compound (449 mg) as a slightly brown solid. (Yield: 33%)

후처리

  1. additionwas additionally added in two portions
  2. customAfter completion of the reaction
  3. concentrationthe reaction solution was concentrated under reduced pressure
  4. additioncontaining the desired compound
  5. concentrationwere concentrated under reduced pressure

출처 및 근거

ORD 기록
ord-9764fadbf8674d9f85871f740dd60b76
출처 데이터셋
uspto-grants-2014_02
특허 번호
US08648097B2

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