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Potassium Carbonate → 7-{[2-Chloro-3-(trifluoromethyl)phenyl]carbonyl}-3-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine

HRID 1889066
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HRID 1889066 반응식
Br[C:2]1[N:6]2[CH2:7][CH2:8][N:9]([C:11]([C:13]3[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[C:14]=3[Cl:23])=[O:12])[CH2:10][C:5]2=[N:4][N:3]=1.[CH3:24]B1OB(C)OB(C)O1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:23][C:14]1[C:15]([C:19]([F:22])([F:21])[F:20])=[CH:16][CH:17]=[CH:18][C:13]=1[C:11]([N:9]1[CH2:8][CH2:7][N:6]2[C:2]([CH3:24])=[N:3][N:4]=[C:5]2[CH2:10]1)=[O:12]
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참가 물질

7

반응물 3

HCID 11430Potassium CarbonateHCID 574072TrimethylboroxineHCID 665992213-Bromo-7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine

생성물 1

HCID 665992867-{[2-Chloro-3-(trifluoromethyl)phenyl]carbonyl}-3-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine

시약·촉매·용매 3

HCID 178418397
HCID 178418397, 화합물
촉매
HCID 962Water용매
HCID 312751,4-Dioxane용매

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온도
110 °C

실험 절차

3-Bromo-7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine (150 mg, 0.366 mmol, e.g. see Example 1 for methods of preparation) was dissolved in 1,4-dioxane (3 mL) and treated with trimethylboroxine (55.2 mg, 0.439 mmol, commercially available e.g. from Sigma-Aldrich or Thermo Fischer Scientific), potassium carbonate (76 mg, 0.549 mmol) and tetrakis(triphenylphosphine)palladium(0) (42.3 mg, 0.037 mmol). The reaction mixture, under argon, was heated at 110° C. for 20 hours. The mixture was then cooled, diluted with water and extracted with ethyl acetate (three times). The organic phase was dried and evaporated. The residue was purified on the mass-directed automated (preparative) HPLC (MDAP) and the residue was triturated with isohexane to give 7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-3-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine (0.028 g) as a white solid.

후처리

  1. temperatureThe mixture was then cooled
  2. extractionextracted with ethyl acetate (three times)
  3. customThe organic phase was dried
  4. customevaporated
  5. customThe residue was purified on the
  6. customthe residue was triturated with isohexane

출처 및 근거

ORD 기록
ord-21ad6dd963fb4c0a9440a660e6ad339d
출처 데이터셋
uspto-grants-2013_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08501946B2

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