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p-Toluenesulfonic acid → 2-{[2'-(bromomethyl)-4-fluoro-5-isopropyl-2-methoxy-4'-(trifluoromethyl)biphenyl-3-yl]oxy}tetrahydro-2H-pyran

HRID 1028629
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1028629
[O:1]1[CH:6]=[CH:5][CH2:4][CH2:3][CH2:2]1.C1(C)C=CC(S(O)(=O)=O)=CC=1.[Br:18][CH2:19][C:20]1[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[CH:23]=[CH:22][C:21]=1[C:30]1[CH:35]=[C:34]([CH:36]([CH3:38])[CH3:37])[C:33]([F:39])=[C:32]([OH:40])[C:31]=1[O:41][CH3:42]>C(Cl)Cl>[Br:18][CH2:19][C:20]1[CH:25]=[C:24]([C:26]([F:27])([F:28])[F:29])[CH:23]=[CH:22][C:21]=1[C:30]1[CH:35]=[C:34]([CH:36]([CH3:38])[CH3:37])[C:33]([F:39])=[C:32]([O:40][CH:6]2[CH2:5][CH2:4][CH2:3][CH2:2][O:1]2)[C:31]=1[O:41][CH3:42]
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Komponenten

5

Edukt 3

HCID 6101p-Toluenesulfonic acidHCID 80803,4-dihydro-2H-pyranHCID 866034362'-(Bromomethyl)-4-fluoro-5-isopropyl-2-methoxy-4'-(trifluoromethyl)biphenyl-3-ol

Produkt 1

HCID 866034372-{[2'-(bromomethyl)-4-fluoro-5-isopropyl-2-methoxy-4'-(trifluoromethyl)biphenyl-3-yl]oxy}tetrahydro-2H-pyran

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344
Dichloromethane
Lösungsmittel
2×

Versuchsvorschrift

3,4-Dihydro-2H-pyran (51.9 mg, 56 μL, 0.617 mmol) was added to a stirred solution of p-toluenesulfonic acid (2.3 mg, 0.0123 mmol) and 2′-(bromomethyl)-4-fluoro-5-isopropyl-2-methoxy-4′-(trifluoromethyl)biphenyl-3-ol (52.0 mg, 0.123 mmol) in dry CH2Cl2 (6.1 mL) at room temperature under N2 and the reaction was stirred overnight. The reaction mixture was diluted with CH2Cl2 (45 mL) and washed with saturated NaHCO3 (5 mL) and 30% saturated Na2SO3 (5 mL), dried (Na2SO4) and concentrated in vacuo to give the crude product. This was purified by flash chromatography (Si, 12×160 mm, 0-40% EtOAc in hexanes gradient) to afford 2-{[2′-(bromomethyl)-4-fluoro-5-isopropyl-2-methoxy-4′-(trifluoromethyl)biphenyl-3-yl]oxy}tetrahydro-2H-pyran. Rf=0.59 (20% EtOAc in hexanes). 1H NMR (600 MHz, CDCl3) 7.82 (s, 1H), 7.60 (d, J=7.0 Hz, 1H), 7.41 (d, J=8.0 Hz, 1H), 6.67 (d, J=7.8 Hz, 1H), 5.77 (s, 1H), 4.97 (dd, J=4.9, 2.9 Hz, 1H), 4.49 (d, J=9.8 Hz, 1H), 4.37 (d, J=9.8 Hz, 1H), 3.89-3.87 (m, 1H), 3.61-3.49 (m, 1H), 3.46 (s, 3H), 3.27-3.21 (m, 1H), 1.89-1.83 (m, 1H), 1.78-1.70 (m, 1H) 1.64-1.48 (m, 3H), 1.26 (d, J=6.8 Hz, 6H).

Aufarbeitung

  1. washwashed with saturated NaHCO3 (5 mL) and 30% saturated Na2SO3 (5 mL)
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated in vacuo
  4. customto give the crude product
  5. customThis was purified by flash chromatography (Si, 12×160 mm, 0-40% EtOAc in hexanes gradient)

Quellen und Nachweise

ORD-Eintrag
ord-50a154b428424aeead19e7edb1a98b26
Quelldatensatz
uspto-grants-2014_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08735435B2

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