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Letters in Organic Chemistry, 2010, Vol. 7, No. 1
Wu et al.
ArH), 6.89 (d, J = 7.8 Hz, 2H, ArH), 3.85 (s, 6H, CH3O); 13C
NMR (75 MHz, CDCl3) (ꢀ, ppm): 55.69, 108.21, 113.27,
120.18, 130.20, 143.07, 160.30.
functional symmetrical biaryls from phenols via nickel-catalyzed
homocoupling of their mesylates. J. Org. Chem., 1995, 60, 176.
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Lei, A.; Zhang, X. A novel palladium-catalyzed homocoupling
reaction initiated by transmetallation of palladium enolates.
Tetrahedron Lett., 2002, 43, 2525.
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homocoupling of arylboronic acids and esters using fluoride in
aqueous solvents. Synlett, 2004, 2351.
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4087.
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from palladium catalysed homocoupling of arylboronic acids under
mild conditions. Synlett, 1997, 131.
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oxidative homocoupling of arylboronic esters. Tetrahedron Lett.,
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Homocoupling of alkyl-, alkenyl-, and arylboronic acids.
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[8]
[9]
Bipheny-3,3’-dicarbaldehyde
1H NMR (300 MHz, CDCl3) (ꢀ, ppm): 10.12 (s, 2H,
CHO), 8.16 (s, 2H, ArH), 7.92 (d, J = 7.5 Hz, 4H, ArH),
7.67 (t, J = 7.5 Hz, 2H, ArH); 13C NMR (75 MHz, CDCl3)
(ꢀ, ppm): 128.50, 129.99, 130.30, 133.52, 137.52, 141.16,
192.60.
[10]
[11]
[12]
Binaphthyl
1H NMR (300 MHz, CDCl3) (ꢀ, ppm): 7.94 (d, J = 8.4
Hz, 4H, ArH), 7.59 (t, J = 7.8 Hz, 2H, ArH), 7.49 (d, J = 7.6
Hz, 4H, ArH), 7.39 (d, J = 8.4 Hz, 2H, ArH), 7.28 (t, J =8.4
Hz, 4H, ArH); 13C NMR (75 MHz, CDCl3) (ꢀ, ppm): 125.87,
126.30, 126.46, 127.04, 128.31, 128.38, 128.63, 133.31,
133.98, 138.93.
[13]
[14]
2,2’-Dimethylbiphenyl
[15]
[16]
1H NMR (300 MHz, CDCl3) (ꢀ, ppm): 7.19-7.14 (m, 6H,
ArH), 7.02 (d, J = 6.9 Hz, 2H, ArH), 1.98 (s, 6H, CH3); 13C
NMR (75 MHz, CDCl3) (ꢀ, ppm): 20.26, 125.97, 127.59,
129.73, 130.25, 136.26, 142.03.
[17]
[18]
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