Reaktionsgleichung
Cl[C:2]1[CH:3]=[CH:4][C:5]([OH:11])=[C:6]([CH:10]=1)[C:7]([OH:9])=[O:8].[CH3:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1B(O)O.C([O-])([O-])=O.[K+].[K+]>O.[Pd].CC([O-])=O.CC([O-])=O.[Pd+2].C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=C(S([O-])(=O)=O)C=2OC)CCCCC1.[Na+]>[OH:11][C:5]1[CH:4]=[CH:3][C:2]([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=2[CH3:12])=[CH:10][C:6]=1[C:7]([OH:9])=[O:8]Komponenten
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 4
Versuchsvorschrift
Using 0.1 Mol % Pd. The general procedure described in Example 3 was used with 5-chloro-2-hydroxy-benzoic acid (173 mg, 1.00 mmol), 2-methylphenylboronic acid (163 mg, 1.20 mmol), K2CO3 (345 mg, 2.50 mmol), water (2.0 mL), Pd/L solution (0.200 mL of a Pd(OAc)2 (1.1 mg, 0.005 mmol, 0.5 mol %), sodium 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl-3′-sulfonate (5.0 mg, 0.010 mmol, 1 mol %) solution in 1.0 mL water), 12 h, 100° C. The product was isolated as a white solid (217 mg, 96%). Mp=151° C. (lit. 150-152° C.). 1H NMR (400 MHz, CDCl3) δ: 11.91 (br-s, 1H), 10.28 (br-s, 1H), 7.83 (d, 1H, J=2.0 Hz), 7.42 (dd, 1H, J=2.4 Hz, J=8.6 Hz), 7.20-7.13 (m, 4H), 6.98 (d, 1H, J=8.4 Hz), 2.20 (s, 3H). 13C NMR (125 MHz, CDCl3) δ: 175.4, 161.3, 140.4, 138.2, 135.6, 133.7, 131.4, 130.7, 129.9, 127.4, 126.2, 117.9, 111.2, 20.7 IR (neat, cm−1): 3062, 1664, 1614, 1583, 1478, 1440, 1229, 1190, 728.
Quellen und Nachweise
- ORD-Eintrag
- ord-34b479c3dd09426c99ccaa45a5b794e2
- Quelldatensatz
- uspto-grants-2014_05
- Patentnummer
- US08735630B2
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