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1,2-Dichloroethane → 7-[(3R)-3-Amino-4-(3,4-difluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine, dihydrochloride

HRID 47589
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HRID 47589 반응식
[F:1][C:2]([F:13])([F:12])[C:3]1[N:4]=[C:5]2[CH2:10][NH:9][CH2:8][CH2:7][N:6]2[CH:11]=1.CC(C)(OC([NH:20][C@H:21]([CH2:26][C:27]1[CH:32]=[CH:31][C:30]([F:33])=[C:29]([F:34])[CH:28]=1)[CH2:22][C:23](O)=[O:24])=O)C.C1C=CC2N(O)N=NC=2C=1.C(Cl)C[Cl:48]>ClCCl>[ClH:48].[ClH:48].[NH2:20][C@H:21]([CH2:26][C:27]1[CH:32]=[CH:31][C:30]([F:33])=[C:29]([F:34])[CH:28]=1)[CH2:22][C:23]([N:9]1[CH2:8][CH2:7][N:6]2[CH:11]=[C:3]([C:2]([F:12])([F:1])[F:13])[N:4]=[C:5]2[CH2:10]1)=[O:24]
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6

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HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 7009791(R)-3-((tert-butoxycarbonyl)amino)-4-(3,4-difluorophenyl)butanoic acidHCID 147199282-(trifluoromethyl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine

생성물 1

HCID 1317243607-[(3R)-3-Amino-4-(3,4-difluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine, dihydrochloride
수율 99.7%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

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온도
0 °C

실험 절차

To a solution of 2-(trifluoromethyl)-5,6,7,8-tetrahydroimidazo[1,2-α]pyrazine (64.3 mg, 0.34 mmol, from Step B) and (3R)-3-[(1,1-dimethylethoxycarbonyl)amino]-4-(3,4-difluorophenyl)butanoic acid (105.9 mg, 0.34 mmol) in dichloromethane (5 mL) was added HOBT (54.5 mg, 0.42 mmol) at 0° C. The reaction was stirred at 0° C. for 10 min, then EDC (96.6 mg, 0.50 mmol) was added. After removal of the ice-bath, the reaction was allowed to stir at ambient temperature for 14 h. The mixture was concentrated and purified by HPLC (Gilson; YMC-Pack Pro C18 column, 100×20 mm I.D.; solvent gradient from 10% acetonitrile, 90% water, and 0.1% trifluoroacetic acid to 90% acetonitrile, 10% water, and 0.1% trifluoroacetic acid) to give 115 mg of the title compound as a foamy solid. 1H NMR (500 MHz, CDCl3) δ 1.36 (s, 9H), 2.62 (m, 2H), 2.86 (m, 2H) 3.34 (bs, 1H), 3.86 (m, 1H), 4.05 (m, 4H). 4.85 (m, 1H) 5.30-5.38 (m, 1H) 6.97 (m, 3H), 7.28 (m, 1H). LC/MS 489 (M+1).

후처리

  1. customAfter removal of the ice-bath
  2. stirringto stir at ambient temperature for 14 h
  3. concentrationThe mixture was concentrated
  4. custompurified by HPLC (Gilson; YMC-Pack Pro C18 column, 100×20 mm I.D.; solvent gradient from 10% acetonitrile, 90% water, and 0.1% trifluoroacetic acid to 90% acetonitrile, 10% water, and 0.1% trifluoroacetic acid)

출처 및 근거

ORD 기록
ord-6a8fcee6df9c48ffa1df32c6d014f5cd
출처 데이터셋
uspto-grants-2004_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06699871B2

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