Hydrochloric Acid → 3-Amino-5-methoxy-[1,1'-biphenyl]-4-carboxamide

HRID 1519444노트

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HRID 1519444 반응식
[NH2:1][C:2]1[CH:3]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:5]=[C:6]([O:10][CH3:11])[C:7]=1[C:8]#[N:9].[OH-:18].[K+].Cl>CCO>[NH2:1][C:2]1[CH:3]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:5]=[C:6]([O:10][CH3:11])[C:7]=1[C:8]([NH2:9])=[O:18]

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 14797Potassium Hydroxide2회HCID 867193553-Amino-5-methoxy-[1,1'-biphenyl]-4-carbonitrile

생성물 1

HCID 867193563-Amino-5-methoxy-[1,1'-biphenyl]-4-carboxamide수율 40.4%

시약·촉매·용매 1

HCID 702Ethanol용매

반응 조건

온도
100 °C

실험 절차

A mixture of 3-amino-5-methoxy-[1,1′-biphenyl]-4-carbonitrile (4, 0.64 g, 2.86 mmol) and KOH (1.12 g, 20 mmol) in EtOH (24 mL) in a sealed tube was heated at 100° C. for 18 h. Additional KOH (0.56 g, 10 mmol) was added and heating was continued for another 18 h. After this time, the mixture was cooled to room temperature, and the pH was adjusted to ˜2 by addition of concentrated HCl. After concentration, the residue was partitioned between ethyl acetate (100 mL) and water (50 mL). The extracts were washed with brine (50 mL), dried (Na2SO4), filtered, and concentrated. The residue was purified by silica gel chromatography eluting with methanol in dichloromethane (0-20%) to afford the title compound (0.28 g, 40%) as a yellow solid: 1H NMR (500 MHz, DMSO-d6) δ 7.62-7.60 (m, 2H), 7.58 (s, 1H), 7.47-7.44 (m, 2H), 7.39-7.36 (m, 1H), 7.28 (s, 1H), 6.61 (d, J=1.5 Hz, 1H), 6.56 (s, 2H), 6.43 (d, J=1.5 Hz, 1H), 3.87 (s, 3H); ESI MS m/z 243 [M+H]+.

후처리

  1. temperatureheating
  2. temperatureAfter this time, the mixture was cooled to room temperature
  3. concentrationAfter concentration
  4. customthe residue was partitioned between ethyl acetate (100 mL) and water (50 mL)
  5. washThe extracts were washed with brine (50 mL)
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was purified by silica gel chromatography
  10. washeluting with methanol in dichloromethane (0-20%)

출처 및 근거

ORD 기록
ord-088feca568d240bf9bff5b232717569e
출처 데이터셋
uspto-grants-2015_07
특허 번호
US09073878B2

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