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Acetyl chloride → 2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile

HRID 1757600
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HRID 1757600 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([C:16]#N)[NH:9][C:10](=O)[C:11]([F:14])([F:13])[F:12])=[CH:4][CH:3]=1.CS(O)(=O)=O.C(Cl)(=O)C.ClC(=C)[C:29]#[N:30].[CH2:32](N(CC)CC)C>C1(C)C=CC=CC=1.C(#N)C.O.CCCCCCC.C(OC(=O)C)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[NH:9][C:10]([C:11]([F:12])([F:13])[F:14])=[CH:32][C:16]=2[C:29]#[N:30])=[CH:6][CH:7]=1
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참가 물질

11

반응물 5

HCID 6367Acetyl chlorideHCID 6395Methanesulfonic AcidHCID 8471TriethylamineHCID 701982-ChloroacrylonitrileHCID 9903361N-(p-chloro-a-cyanobenzyl)-2,2,2-trifluoroacetamide

생성물 1

HCID 110001432-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile

시약·촉매·용매 5

HCID 962Water용매HCID 1140Toluene용매HCID 6342Acetonitrile용매HCID 8857Ethyl Acetate용매HCID 8900Heptane용매

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온도
80 °C

실험 절차

A slurry of N-[(p-chlorophenyl)cyanomethyl]-2,2,2-trifluoroacetamide (13.1 g, 0.05 mol) in toluene is treated sequentially with methanesulfonic acid (2.4 g, 0.025 mol) and acetyl chloride (4.32 g, 0.055 mol), at room temperature, heated at 80° C. for 2 hours, cooled to room temperature, diluted with acetonitrile, treated first with 2-chloroacrylonitrile (5.25 g, 0.06 mol) then dropwise with triethylamine (13.7 g, 0.135 mol), heated at 70°-72° C. for 1 hour, cooledto room temperature and diluted with water. The mixture is extracted with ethyl acetate. The extracts are combined, washed with water and concentrated in vacuo to give a residue. Flash chromatography (silica-gel;15% ethylacetate in heptane as eluent) gives the title product.

후처리

  1. temperaturecooled to room temperature
  2. customcooledto room temperature
  3. extractionThe mixture is extracted with ethyl acetate
  4. washwashed with water
  5. concentrationconcentrated in vacuo
  6. customto give a residue

출처 및 근거

ORD 기록
ord-a385f8009d6547e7b750cd21774f5244
출처 데이터셋
uspto-grants-1995_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05446170

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