Carbon tetrabromide → Methyl 2''-(bromomethyl)-4'-methoxy-2-methyl-4''-(trifluoromethyl)-1,1':3',1''-terphenyl-4-carboxylate

HRID 537985Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 537985
O[CH2:2][C:3]1[CH:8]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:6]=[CH:5][C:4]=1[C:13]1[CH:14]=[C:15]([C:21]2[CH:26]=[CH:25][C:24]([C:27]([O:29][CH3:30])=[O:28])=[CH:23][C:22]=2[CH3:31])[CH:16]=[CH:17][C:18]=1[O:19][CH3:20].C(Br)(Br)(Br)[Br:33].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C(Cl)Cl>[Br:33][CH2:2][C:3]1[CH:8]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:6]=[CH:5][C:4]=1[C:13]1[CH:14]=[C:15]([C:21]2[CH:26]=[CH:25][C:24]([C:27]([O:29][CH3:30])=[O:28])=[CH:23][C:22]=2[CH3:31])[CH:16]=[CH:17][C:18]=1[O:19][CH3:20]

Komponenten

5

Edukt 3

HCID 11205Carbon tetrabromideHCID 11776TriphenylphosphineHCID 67066009Methyl 2''-(hydroxymethyl)-4'-methoxy-2-methyl-4''-(trifluoromethyl)-1,1':3', 1''-terphenyl-4-carboxylate

Produkt 1

HCID 57544358Methyl 2''-(bromomethyl)-4'-methoxy-2-methyl-4''-(trifluoromethyl)-1,1':3',1''-terphenyl-4-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a 0° C. solution of methyl 2″-(hydroxymethyl)-4′-methoxy-2-methyl-4″-(trifluoromethyl)-1,1′:3′,1″-terphenyl-4-carboxylate (1.500 g, 3.49 mmol) in CH2Cl2 (14 mL) was added CBr4 (2.429 g, 7.33 mmol), and then a solution of triphenyl phosphine (1.830 g, 6.98 mmol) in CH2Cl2 (15 mL). The solution was warmed to room temperature and stirred for twelve hours. The reaction was concentrated, and the residue was purified by flash chromatography on silica gel (0 to 25% EtOAc/hexanes) to afford methyl 2″-(bromomethyl)-4′-methoxy-2-methyl-4″-(trifluoromethyl)-1,1′:3′,1″-terphenyl-4-carboxylate. Rf=0.59 (50% EtOAc/hexanes). LCMS=494.8 (M+1)+. 1H NMR (CDCl3, 500 MHz), δ 7.95 (s, 1H), 7.89 (d, J=8.0 Hz, 1H), 7.80 (s, 1H), 7.59 (d, J=7.6 Hz, 1H), 7.40-7.33 (m, 3H), 7.21 (d, J=2.3 Hz, 1H), 7.06 (d, J=8.5 Hz, 1H), 4.44-4.39 (m, 2H), 3.93 (s, 3H), 3.82 (s, 3H), 2.37 (s, 3H).

Aufarbeitung

  1. concentrationThe reaction was concentrated
  2. customthe residue was purified by flash chromatography on silica gel (0 to 25% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-9fb780ea86f34cd59d38e21995f801a6
Quelldatensatz
uspto-grants-2014_10
Patentnummer
US08865707B2

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