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Triethylamine → 2-Cyclopropyl-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-5-methyl-6-vinyl-1,3-benzoxazole-4-carbonitrile

HRID 17458
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HRID 17458 반응식
[CH:1]1([C:4]2[O:5][C:6]3[C:7](=[C:9]([C:17]#[N:18])[C:10]([CH3:16])=[C:11]([CH:14]=[CH2:15])[C:12]=3F)[N:8]=2)[CH2:3][CH2:2]1.C(N(CC)CC)C.[CH3:26][N:27]([CH3:33])[C@H:28]1[CH2:32][CH2:31][NH:30][CH2:29]1.C(=O)([O-])O.[Na+]>CS(C)=O.C(OCC)(=O)C>[CH:1]1([C:4]2[O:5][C:6]3[C:7](=[C:9]([C:17]#[N:18])[C:10]([CH3:16])=[C:11]([CH:14]=[CH2:15])[C:12]=3[N:30]3[CH2:31][CH2:32][C@H:28]([N:27]([CH3:33])[CH3:26])[CH2:29]3)[N:8]=2)[CH2:3][CH2:2]1
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참가 물질

7

반응물 4

HCID 8471TriethylamineHCID 516892Sodium BicarbonateHCID 7019156(3S)-(-)-3-(Dimethylamino)pyrrolidineHCID 685849162-Cyclopropyl-7-fluoro-5-methyl-6-vinyl-1,3-benzoxazole-4-carbonitrile

생성물 1

HCID 510421142-Cyclopropyl-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-5-methyl-6-vinyl-1,3-benzoxazole-4-carbonitrile수율 89.2%

시약·촉매·용매 2

HCID 679Dimethyl Sulfoxide용매HCID 8857Ethyl Acetate용매

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온도
90 °C

실험 절차

2-Cyclopropyl-7-fluoro-5-methyl-6-vinyl-1,3-benzoxazole-4-carbonitrile (I-180) (100 mg, 0.41 mmol) was dissolved in dimethyl sulfoxide (2 ml), then at room temperature, triethylamine (86 μl, 0.62 mmol) and (3S)-3-(dimethylamino)pyrrolidine (68 μl, 0.54 mmol) were added. The solution was stirred under nitrogen atmosphere at 90° C. for 4.5 hours. After cooling to room temperature, the reaction liquid was fractionated with ethyl acetate and an aqueous saturated sodium hydrogencarbonate solution. The aqueous layer was further extracted twice with ethyl acetate. The organic layers were combined, washed with saturated brine, and dried over anhydrous sodium sulfate. The insoluble matter was separated by filtration, then the solvent was evaporated away, and the resulting residue was purified by preparative TLC (eluent, chloroform:methanol=9:1) to obtain a roughly-purified product (123 mg, 89%) as a pale brown solid. This was recrystallized from diisopropyl ether and hexane to obtain the entitled compound (79 mg) as a white solid.

후처리

  1. temperatureAfter cooling to room temperature
  2. customthe reaction liquid
  3. extractionThe aqueous layer was further extracted twice with ethyl acetate
  4. washwashed with saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe insoluble matter was separated by filtration
  7. customthe solvent was evaporated away
  8. customthe resulting residue was purified by preparative TLC (eluent, chloroform:methanol=9:1)

출처 및 근거

ORD 기록
ord-acbba13ed54f4c7aba590ad90c9d1f0e
출처 데이터셋
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07737166B2

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