Potassium Carbonate → 4-Ethynyl-1-(4-fluorophenyl)-2-methyl-1H-imidazole

HRID 491335

반응식

HRID 491335 반응식
COP(=O)OC.[C:7](=O)([O-])[O-].[K+].[K+].[F:13][C:14]1[CH:19]=[CH:18][C:17]([N:20]2[CH:24]=[C:23]([CH:25]=O)[N:22]=[C:21]2[CH3:27])=[CH:16][CH:15]=1>CO>[C:25]([C:23]1[N:22]=[C:21]([CH3:27])[N:20]([C:17]2[CH:18]=[CH:19][C:14]([F:13])=[CH:15][CH:16]=2)[CH:24]=1)#[CH:7]

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 13361Phosphonic acid, dimethyl esterHCID 859979931-(4-fluoro-phenyl)-2-methyl-1H-imidazole-4-carbaldehyde

생성물 1

HCID 116655954-Ethynyl-1-(4-fluorophenyl)-2-methyl-1H-imidazole

시약·촉매·용매 1

HCID 887Methanol용매2회

실험 절차

Diazo-2-oxo-propyl)-phosphonic acid dimethyl ester (6.51 g, 33.9 mmol) was dissolved in 100 mL methanol. Potassium carbonate (7.81 g, 56.5 mmol) was added. A solution of 1-(4-fluoro-phenyl)-2-methyl-1H-imidazole-4-carbaldehyde (5.77 g, 45 mmol) in 100 mmol methanol was added dropwise at room temperature. The reaction mixture was stirred at room temperature overnight. The solvent was evaporated. The residue was taken up in 150 mL water and extracted three times with ethyl acetate (150 mL each). The combined organic extracts were dried with sodium sulfate, filtered and evaporated. The crude product was purified by flash chromatography on silica gel (heptane/ethyl acetate 100:0->0:100 gradient) and the desired compound was obtained as a white solid (3.81 g, 67%), MS: m/e=200.1 (M+).

후처리

  1. customThe solvent was evaporated
  2. extractionextracted three times with ethyl acetate (150 mL each)
  3. dry with materialThe combined organic extracts were dried with sodium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. customThe crude product was purified by flash chromatography on silica gel (heptane/ethyl acetate 100:0->0:100 gradient)

출처 및 근거

ORD 기록
ord-5a85f045d899436aa578f818f151588d
출처 데이터셋
uspto-grants-2009_05
특허 번호
US07531529B2

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