p-Toluenesulfonic acid monohydrate → 1-(4-Methanesulfonyl-phenyl)-2-thiophen-2-yl-4-trifluoromethyl-1H-imidazole

HRID 52361ノート

反応式

HRID 52361 の反応式
O[C:2]1([C:22]([F:25])([F:24])[F:23])[CH2:6][N:5]([C:7]2[CH:12]=[CH:11][C:10]([S:13]([CH3:16])(=[O:15])=[O:14])=[CH:9][CH:8]=2)[C:4]([C:17]2[S:18][CH:19]=[CH:20][CH:21]=2)=[N:3]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[CH3:16][S:13]([C:10]1[CH:9]=[CH:8][C:7]([N:5]2[CH:6]=[C:2]([C:22]([F:25])([F:24])[F:23])[N:3]=[C:4]2[C:17]2[S:18][CH:19]=[CH:20][CH:21]=2)=[CH:12][CH:11]=1)(=[O:14])=[O:15]

参加物

4

反応物 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 229979092-[4-Hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1h-imidazol-2-yl]thiophene

生成物 1

HCID 117936321-(4-Methanesulfonyl-phenyl)-2-thiophen-2-yl-4-trifluoromethyl-1H-imidazole収率 82%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

A mixture of the 4,5-dihydro-imidazole of step 2 (0.60 g, 1.54 mmol) and p-toluenesulfonic acid monohydrate (0.12 g, 0.63 mmol) in toluene (100 ml) was heated to reflux for 4.5 hours. The reaction mixture was cooled and the solvent removed under reduced pressure. The crude mixture (1.2 g) was chromatographed on silica gel using ethyl acetate/hexane 50/50 to give pure 2-[1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl) -1H-imidazol-2-yl]thiophene (0.47 g, 82%) as a white solid: mp (DSC) 182° C. Anal. Calc'd. for C15H11N2S2O2F3C, 48.38, H, 2.98, N, 7.52, S, 17.22 Found C, 48.36, H, 3.02, N, 7.42, S, 17.47.

後処理

  1. temperaturewas heated
  2. temperatureto reflux for 4.5 hours
  3. temperatureThe reaction mixture was cooled
  4. customthe solvent removed under reduced pressure
  5. customThe crude mixture (1.2 g) was chromatographed on silica gel

出典と根拠

ORDレコード
ord-d1193196289643f18d7874190bfe2222
出典データセット
uspto-grants-1997_04
特許番号
US05616601

反応ノート

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