Hydrochloric Acid → 5-Fluoro-2-(6-hydroxy-2-naphthyl)benzamide

HRID 735373

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HRID 735373 반응식
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([OH:12])[CH:6]=[CH:5]2.[F:13][C:14]1[CH:15]=[CH:16][C:17](B2OC(C)(C)C(C)(C)O2)=[C:18]([CH:21]=1)[C:19]#[N:20].C(=O)([O-])[O-:32].[Na+].[Na+].Cl>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:13][C:14]1[CH:15]=[CH:16][C:17]([C:2]2[CH:11]=[CH:10][C:9]3[C:4](=[CH:5][CH:6]=[C:7]([OH:12])[CH:8]=3)[CH:3]=2)=[C:18]([CH:21]=1)[C:19]([NH2:20])=[O:32]

참가 물질

7

반응물 4

HCID 313Hydrochloric AcidHCID 10340Sodium CarbonateHCID 271446-Bromo-2-naphthalenolHCID 221807905-Fluoro-2-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile

생성물 1

HCID 689016405-Fluoro-2-(6-hydroxy-2-naphthyl)benzamide

시약·촉매·용매 2

HCID 178418397HCID 178418397, 화합물촉매HCID 312751,4-Dioxane용매

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온도
80 °C

실험 절차

A mixture of 6-bromo-2-naphthol (12.0 g, 52.2 mmol), 5-fluoro-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)benzonitrile (16.7 g, 67.6 mmol, prepared according to the method disclosed in patent WO/2003099816), sodium carbonate solution (2M, 75 mL) and tetrakis(triphenylphosphine)palladium (0) (1.2 g, 1.0 mmol) in 1,4-dioxane (360 mL) was heated at 80° C. for 17 hours. It was allowed to cool then poured into dilute hydrochloric acid (1 M, 360 mL) and extracted with ethyl acetate (3×200 mL). These extracts were washed with water and brine then dried (MgSO4), filtered and the solution concentrated in vacuo to a volume of ˜100 mL. Solid was filtered off and sucked dry to give 5-fluoro-2-(6-hydroxy-2-naphthyl)benzamide as a white solid. This solid (6.3 g, 22.4 mmol) was suspended in dichloromethane (130 mL)/pyridine (11 mL) at 0° C. under nitrogen, and trifluoromethane sulfonic anhydride (11 mL, 65.5 mmol) added gradually over 40 minutes before leaving overnight to return to ambient temperature. Solvent was removed in vacuo, water (400 mL) added and extracted into ethyl acetate (2×300 mL). These extracts were washed with water and brine then dried (MgSO4), filtered and solvent removed in vacuo. Purification by flash column chromatography eluting with 10% ethyl acetate/isohexane gave 6-(2-cyano-4-fluorophenyl)-2-naphthyl trifluoromethanesulfonate (8.0 g, 38%). 1H NMR (500 MHz, CDCl3) δ 8.06 (1H, s), 8.01 (2H, dd, J=4.0, 9.0 Hz), 7.82 (1H, d, J=2.3 Hz), 7.73 (1H, dd, J=1.7, 8.5 Hz), 7.60 (1H, dd, J=5.2, 8.6 Hz), 7.53 (1H, dd, J=2.6, 7.9 Hz), 7.47-7.41 (2H, m).

후처리

  1. customprepared
  2. temperatureto cool
  3. extractionextracted with ethyl acetate (3×200 mL)
  4. washThese extracts were washed with water and brine
  5. dry with materialthen dried (MgSO4)
  6. filtrationfiltered
  7. concentrationthe solution concentrated in vacuo to a volume of ˜100 mL
  8. filtrationSolid was filtered off
  9. customsucked dry

출처 및 근거

ORD 기록
ord-b27f5cf0ae4b43beb311cacc04c5ebbd
출처 데이터셋
uspto-grants-2009_09
특허 번호
US07592456B2

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