Hydrochloric Acid → 2-((1-Ethyl-1H-pyrazol-5-yl)amino)benzoic acid

HRID 1586128노트

반응식

HRID 1586128 반응식
I[C:2]1[CH:10]=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=[O:5].C(=O)([O-])[O-].[K+].[K+].[NH2:17][C:18]1[N:22]([CH2:23][CH3:24])[N:21]=[CH:20][CH:19]=1.Cl>CN(C=O)C.CC([O-])=O.CC([O-])=O.[Cu+2].O.C(O)(=O)C>[CH2:23]([N:22]1[C:18]([NH:17][C:2]2[C:3](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:4]([OH:6])=[O:5])=[CH:19][CH:20]=[N:21]1)[CH3:24]

참가 물질

8

반응물 4

HCID 313Hydrochloric AcidHCID 69412-Iodobenzoic acidHCID 11430Potassium CarbonateHCID 3373101-Ethyl-1H-pyrazol-5-amine

생성물 1

HCID 154274682-((1-Ethyl-1H-pyrazol-5-yl)amino)benzoic acid수율 42.4%

시약·촉매·용매 3

HCID 165397Cupric acetate monohydrate촉매HCID 176Acetic Acid용매HCID 6228Dimethylformamide용매

실험 절차

To a solution of 2-iodobenzoic acid (54 g, 0.218 mol) in DMF (570 ml) is added potassium carbonate (33.4 g, 0.242 mol), followed by 5-amino-1-ethylpyrazole (24.2 g, 0.218 mol) and finally Cu(OAc)2.H2O (0.9 g, 0.0045 mol). The reaction mixture is refluxed overnight, cooled and then poured into ice water. Acetic acid and HCl are added until a pH of about 4 is obtained. A precipitate forms which is collected by filtration, washed with water and dried to afford 21.4 g of N-(1-ethylpyrazol-5-yl) anthranilic acid.

후처리

  1. temperatureThe reaction mixture is refluxed overnight
  2. temperaturecooled
  3. customis obtained
  4. filtrationA precipitate forms which is collected by filtration
  5. washwashed with water
  6. customdried

출처 및 근거

ORD 기록
ord-22aac3f4894442f5ba4a2651c4f6fb45
출처 데이터셋
uspto-grants-1999_08
특허 번호
US05942520

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