Pyruvic Acid → 2',5-dichloro-3-(3-pyruvamidomethyl-5-methyl-4H-1,2,4-triazol-4-yl)-benzophenone

HRID 25946

反応式

HRID 25946 の反応式
[C:1]([OH:6])(=O)[C:2]([CH3:4])=[O:3].S(Cl)(Cl)=O.Br.Br.[Cl:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[C:20](=[O:36])[C:21]1[CH:26]=[C:25]([Cl:27])[CH:24]=[C:23]([N:28]2[C:32]([CH3:33])=[N:31][N:30]=[C:29]2[CH2:34][NH2:35])[CH:22]=1.C(=O)(O)[O-].[Na+]>C(Cl)(Cl)Cl.C(OCC)(=O)C.CN(C)C=O.C1C=CC=CC=1>[Cl:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[C:20](=[O:36])[C:21]1[CH:26]=[C:25]([Cl:27])[CH:24]=[C:23]([N:28]2[C:32]([CH3:33])=[N:31][N:30]=[C:29]2[CH2:34][NH:35][C:1](=[O:6])[C:2]([CH3:4])=[O:3])[CH:22]=1

参加物

9

反応物 4

HCID 1060Pyruvic AcidHCID 24386Thionyl ChlorideHCID 516892Sodium BicarbonateHCID 213256842',5-dichloro-3-(3-aminomethyl-5-methyl-4H-1,2,4-triazol-4-yl)-benzophenone dihydrobromide

生成物 1

HCID 213257442',5-dichloro-3-(3-pyruvamidomethyl-5-methyl-4H-1,2,4-triazol-4-yl)-benzophenone収率 64.8%

試薬・触媒・溶媒 4

HCID 241Benzene溶媒HCID 6212Chloroform溶媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A solution of pyruvic acid (0.33 g) and thionyl chloride (0.27 g) in chloroform (2 ml) is refluxed for 1 hour. After cooling, the solution is mixed with 2',5-dichloro-3-(3-aminomethyl-5-methyl-4H-1,2,4-triazol-4-yl)-benzophenone dihydrobromide (1.31 g), benzene (6 ml) and dimethylformamide (11 ml) at 0° C. The resultant mixture is stirred at room temperature for 3 hours and allowed to stand overnight. The reaction mixture is neutralized with aqueous sodium bicarbonate and shaken with ethyl acetate. The organic layer is washed with water, dried and evaporated to remove the solvent. The residue is recrystallized from ethyl acetate to give 2',5-dichloro-3-(3-pyruvamidomethyl-5-methyl-4H-1,2,4-triazol-4-yl)-benzophenone (0.7 g) as crystals melting at 178° to 180° C.

後処理

  1. temperatureAfter cooling
  2. washThe organic layer is washed with water
  3. customdried
  4. customevaporated
  5. customto remove the solvent
  6. customThe residue is recrystallized from ethyl acetate

出典と根拠

ORDレコード
ord-9ffa1233d3a54301a7b399e8045faf43
出典データセット
uspto-grants-1979_04
特許番号
US04147700

関連ノート

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