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Acetic Acid → rac-(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-2-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile

HRID 909014
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HRID 909014 반응식
[Cl:1][C:2]1[C:3]([F:20])=[C:4](/[CH:8]=[C:9](/[C:12]2[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][C:13]=2[F:19])\[C:10]#[N:11])[CH:5]=[CH:6][CH:7]=1.[CH3:21][C:22]([CH3:32])([CH3:31])[CH2:23]/[CH:24]=[N:25]/[CH2:26][Si](C)(C)C.C(O)(=O)C.O>CN(C)P(N(C)C)(N(C)C)=O>[Cl:1][C:2]1[C:3]([F:20])=[C:4]([CH:8]2[CH2:26][NH:25][CH:24]([CH2:23][C:22]([CH3:32])([CH3:31])[CH3:21])[C:9]2([C:12]2[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][C:13]=2[F:19])[C:10]#[N:11])[CH:5]=[CH:6][CH:7]=1
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참가 물질

6

반응물 4

HCID 176Acetic AcidHCID 962Water2회HCID 58222849(E)-3,3-dimethyl-N-(trimethylsilylmethyl)butan-1-imineHCID 59249629(Z)-3-(3-Chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrile

생성물 1

HCID 67095302rac-(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-2-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile수율 24.4%

시약·촉매·용매 1

HCID 12679Hexamethylphosphoramide용매

실험 절차

To a solution of (Z)-3-(3-chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrile (1.2 g, 3.87 mmol) in hexamethylphosphoramide (20 mL) was added [3,3-dimethyl-but-(E)-ylidene]-trimethylsilanylmethyl-amine (1.1 g, 5.9 mmol), acetic acid (60 mg, 1 mmol) and H2O (0.1 g, 5.6 mmol) sequentially. The reaction mixture was stirred at room temperature for 18 h. Water was added. The mixture was extracted with ethyl acetate. The organic layer was separated, and aqueous layer was extracted with ethyl acetate. The organic layers were combined, washed with water twice, dried over MgSO4, then concentrated. The residue was purified by chromatography (EtOAc:hexanes=1:4, 1;3) to give rac-(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-2-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile as a white foam (0.4 g, 24%).

후처리

  1. extractionThe mixture was extracted with ethyl acetate
  2. customThe organic layer was separated
  3. extractionaqueous layer was extracted with ethyl acetate
  4. washwashed with water twice
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated
  7. customThe residue was purified by chromatography (EtOAc:hexanes=1:4, 1;3)

출처 및 근거

ORD 기록
ord-513cc70eb8514c9f8b113bad69f8c7a6
출처 데이터셋
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08017607B2

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