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2004
Polyphenylalkane derivatives
Q 0720
Palladium-Catalyzed Ligand-Free Suzuki Cross-Coupling Reactions of Benzylic
with Aryl Boronic Acids under Mild Conditions. — An efficient procedure
50- 058 Halides
for the Pd-catalyzed Suzuki cross-coupling reaction of benzyl bromides with the arylboronic acids (II) under mild conditions is described. Interestingly, the F and Cl substituents in the benzyl bromides (VIIIa) and (VIIIb) remain unaffected, whereas the corresponding aromatic bromide (X) is coupled selectively in the presence of the benzyl
bromide moiety to give the biphenyls (XI). Benzyl chloride as well as an alkyl bromide
failed to give any coupling products. — (BANDGAR*, B. P.; BETTIGERI, S. V.;
PHOPASE, J.; Tetrahedron Lett. 45 (2004) 37, 6959-6962; Org. Chem. Res. Lab.,
Sch. Chem. Sci., Swami Ramanand Teerth Marathwada Univ., Nanded 431 606, India;
Eng.) — Roy
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