Acetic Acid → ethyl (2E)-3-[2-(4-cyanopyridin-2-yl)hydrazinyl]prop-2-enoate

HRID 878537

반응식

HRID 878537 반응식
[NH:1]([C:3]1[CH:4]=[C:5]([CH:8]=[CH:9][N:10]=1)[C:6]#[N:7])[NH2:2].CN(C)/[CH:13]=[CH:14]/[C:15]([O:17][CH2:18][CH3:19])=[O:16].CC(O)=O>CCO>[C:6]([C:5]1[CH:8]=[CH:9][N:10]=[C:3]([NH:1][NH:2]/[CH:13]=[CH:14]/[C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH:4]=1)#[N:7]

참가 물질

5

반응물 3

HCID 176Acetic AcidHCID 5369162Ethyl trans-3-dimethylaminoacrylateHCID 201187142-Hydrazinylpyridine-4-carbonitrile

생성물 1

HCID 86725509ethyl (2E)-3-[2-(4-cyanopyridin-2-yl)hydrazinyl]prop-2-enoate수율 35%

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

To a solution of 2-hydrazinylisonicotinonitrile (500 mg, 3.73 mmol, PREPARATION 2) and ethyl (2E)-3-(dimethylamino)prop-2-enoate (534 mg, 3.73 mmol) in 20 mL EtOH was added 4 mL AcOH, before the mixture was heated under reflux conditions overnight. The reaction mixture was cooled and concentrated to dryness. The residue was adjusted to pH>8 with sat'd. aq. NaHCO3 and extracted with EtOAc. The combined organic layers were washed with brine, dried, and concentrated to dryness. The residue was purified by flash column chromatography (PE/EtOAc=5/1) to give the title compound (300 mg, 35%) as a yellow solid. [M+H] Calc'd for C11H12N4O2, 233; Found, 233.

후처리

  1. temperaturebefore the mixture was heated under reflux conditions overnight
  2. temperatureThe reaction mixture was cooled
  3. concentrationconcentrated to dryness
  4. extractionaq. NaHCO3 and extracted with EtOAc
  5. washThe combined organic layers were washed with brine
  6. customdried
  7. concentrationconcentrated to dryness
  8. customThe residue was purified by flash column chromatography (PE/EtOAc=5/1)

출처 및 근거

ORD 기록
ord-d3073c1027dd41739d74cc49955b4e3d
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08987461B2

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