18-Crown-6 → (E)-3-[2-(2-methoxycarbonylmethylenecyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

HRID 965349ノート

反応式

HRID 965349 の反応式
[O:1]=[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[N:10][N:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=23)=[N:4][NH:3]1.CC(C)([O-])C.[K+].C1OCCOCCOCCOCCOCCOC1.CS(O[CH:52]1[CH2:57][CH2:56][CH2:55][CH2:54]/[C:53]/1=[CH:58]\[C:59]([O:61][CH3:62])=[O:60])(=O)=O>CN(C)C=O>[CH3:62][O:61][C:59](/[CH:58]=[C:53]1/[CH:52]([N:3]2[C:2](=[O:1])[CH:7]=[CH:6][C:5]([C:8]3[C:9]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=4)=[N:10][N:11]4[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=34)=[N:4]2)[CH2:57][CH2:56][CH2:55][CH2:54]/1)=[O:60]

参加物

6

反応物 4

HCID 2855718-Crown-6HCID 105894183(2H)-Pyridazinone, 6-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)-HCID 22629181(E)-1-methylsulfonyloxy-2-methoxycarbonylmethylenecyclohexaneHCID 23665647Potassium tert-butoxide

生成物 1

HCID 22629241(E)-3-[2-(2-methoxycarbonylmethylenecyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine収率 46.2%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒2 回

実験手順

To a solution of 3-(3-oxo-2,3-dihydropyridazin-6-yl)-2-phenylpyrazolo[1,5-a]pyridine (271 mg) in N,N-dimethylformamide (6 ml) was added potassium tert-butoxide (111 mg) and 18-crown-6 (24.8 mg) at 5C. To this solution was added a solution of (E)-1-methylsulfonyloxy-2-methoxycarbonylmethylenecyclohexane (467 mg) in N,N-dimethylformamide (2 ml) was added dropwise. The reaction mixture was stirred at room temperature for 1 hour and then heated at 110° to 125° C. for 7 hours. The reaction mixture was poured into ice water (30 ml) and extracted with ethyl acetate (20 ml×2). The combined extracts were washed with water (20 ml) and brine (20 ml), dried over anhydrous magnesium sulfate, and evaporated in vacuo. The crude material was purified by column chromatography on SiO2 using a mixture of dichloromethane and ethyl acetate (20:1) as an eluant to give colorless crystals of (E)-3-[2-(2-methoxycarbonylmethylenecyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine (191.4 mg).

後処理

  1. additionwas added dropwise
  2. temperatureheated at 110° to 125° C. for 7 hours
  3. extractionextracted with ethyl acetate (20 ml×2)
  4. washThe combined extracts were washed with water (20 ml) and brine (20 ml)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customevaporated in vacuo
  7. customThe crude material was purified by column chromatography on SiO2 using
  8. additiona mixture of dichloromethane and ethyl acetate (20:1) as an eluant

出典と根拠

ORDレコード
ord-64fd98363cec4be7a94b98a4305e5a58
出典データセット
uspto-grants-1998_06
特許番号
US05773530

反応ノート

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