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

HRID 1889064

反応式

HRID 1889064 の反応式
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.C(=O)([O-])[O-].[Na+].[Na+].[C:30]1(B(O)O)[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1>COCCOC.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=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]([C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)=[N:3][N:4]=[C:5]2[CH2:10]1)=[O:12]

参加物

7

反応物 3

HCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 665992213-Bromo-7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine

生成物 1

HCID 665991917-{[2-Chloro-3-(trifluoromethyl)phenyl]carbonyl}-3-phenyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine

試薬・触媒・溶媒 3

HCID 178418476HCID 178418476、化合物触媒HCID 962Water溶媒HCID 80711,2-Dimethoxyethane溶媒

実験手順

To 3-bromo-7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine (0.150 g, 0.366 mmol, e.g. see Example 1 for methods of preparation) in 1,2-dimethoxyethane (DME) (3 mL) was added aqueous sodium carbonate solution (1.9 mL, 1 M) followed by phenylboronic acid (0.067 g, 0.549 mmol, commercially available e.g. from Sigma-Aldrich or Strem Chemicals) and dichlorobis(triphenylphosphine)palladium(II) (0.013 g, 0.018 mmol). The reaction mixture was heated at reflux for 7 hours. The mixture was diluted with water (10 mL) and extracted with ethyl acetate (twice). The combined organic fractions were dried, filtered and evaporated. An attempt to purify the crude material on silica gel chromatography using methanol in Dichloromethane (0-20%) as eluent was unsuccessful. The residue was then purified using mass-directed automated (preparative) HPLC (MDAP) to give 7-{[2-chloro-3-(trifluoromethyl)phenyl]carbonyl}-3-phenyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyrazine (0.076 g) as a white solid.

後処理

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 7 hours
  3. extractionextracted with ethyl acetate (twice)
  4. customThe combined organic fractions were dried
  5. filtrationfiltered
  6. customevaporated
  7. customAn attempt to purify the crude material on silica gel chromatography
  8. customThe residue was then purified

出典と根拠

ORDレコード
ord-0839e6c5fe2d4f1aae394e6fab065492
出典データセット
uspto-grants-2013_08
特許番号
US08501946B2

関連ノート

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