Hydrochloric Acid → 5-Amino-4-[3-(2-aminosulfonylethenyl)benzoyl]-1-(4-fluorophenyl)pyrazole

HRID 843061ノート

反応式

HRID 843061 の反応式
[NH2:1][C:2]1[N:6]([C:7]2[CH:12]=[CH:11][C:10]([F:13])=[CH:9][CH:8]=2)[N:5]=[CH:4][C:3]=1[C:14](=[O:22])[C:15]1[CH:20]=[CH:19][CH:18]=[C:17](Br)[CH:16]=1.[CH:23]([S:25]([NH2:28])(=[O:27])=[O:26])=[CH2:24].C(N(CC)CC)C.Cl>CN(C)C=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>[NH2:1][C:2]1[N:6]([C:7]2[CH:12]=[CH:11][C:10]([F:13])=[CH:9][CH:8]=2)[N:5]=[CH:4][C:3]=1[C:14](=[O:22])[C:15]1[CH:20]=[CH:19][CH:18]=[C:17]([CH:24]=[CH:23][S:25]([NH2:28])(=[O:27])=[O:26])[CH:16]=1

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 520075Vinyl sulfonamideHCID 114512375-Amino4-(3-bromobenzoyl)-1-(4-fluorophenyl)pyrazole

生成物 1

HCID 544874125-Amino-4-[3-(2-aminosulfonylethenyl)benzoyl]-1-(4-fluorophenyl)pyrazole

試薬・触媒・溶媒 2

HCID 178418476HCID 178418476、化合物触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
100 °C

実験手順

A mixture of 5-amino-4-(3-bromobenzoyl)-1-(4-fluorophenyl)pyrazole (1.5 g, 4.14 mmol) [prepared as described in Example 1 above], vinylsulfonamide (1.33 g, 12.4 mmol), bis(triphenylphosphine)palladium chloride (0.3 g, 0.42 mmol) and triethylamine (6 ml, 43 mmol) in dimethylformamide (18 ml) was heated at 100° C. under argon. After 16 h, the reaction mixture was cooled to room temperature and poured into 1 N hydrochloric acid. The product was extracted into ethyl acetate, washed with brine, dried over sodium sulfate and filtered. The organic layer was removed in vacuo and the residue was purified by flash chromatography (elution gradient: 40-80% ethyl acetate/hexane) to give 5-amino-4-[3-(2-aminosulfonylethenyl)benzoyl]-1-(4-fluorophenyl)pyrazole which was recrystallized from a mixture of methanol/ethyl acetate/hexane to give 0.78 g of the desired product.

後処理

  1. temperaturethe reaction mixture was cooled to room temperature
  2. extractionThe product was extracted into ethyl acetate
  3. washwashed with brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customThe organic layer was removed in vacuo
  7. customthe residue was purified by flash chromatography (elution gradient: 40-80% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-25c8b48e5cd24fadad38232a6e3e43b0
出典データセット
uspto-grants-2002_04
特許番号
US06376527B1

反応ノート

読み込み中…