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ChemInform Abstract: Regioselective Arylation Reactions of Biphenyl-2-ols, Naphthols, and Benzylic Compounds with Aryl Halides under Palladium Catalysis.

โœ Scribed by T. SATOH; J. INOH; Y. KAWAMURA; Y. KAWAMURA; M. MIURA; M. NOMURA

Publisher
John Wiley and Sons
Year
2010
Weight
38 KB
Volume
30
Category
Article
ISSN
0931-7597

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โœฆ Synopsis

Regioselective Arylation Reactions of Biphenyl-2-ols, Naphthols, and Benzylic Compounds with Aryl Halides under Palladium Catalysis. -Biphenylols such as (I) are regioselectively mono-and diarylated using Cs 2 CO 2 as a base whereas other alkaline carbonate bases are much less effective. The reaction of naphthol (V) selectively occurs at C-8 position while in the reaction of naphthol (VII) with aryl bromides (VIII) diarylated compounds are formed as the single major products. Similarly, benzyl ketones, phenylacetonitrile, and methyl phenylacetate are arylated at the benzylic position, cf. (XII) and (XIV). -(SATOH, T.; INOH,

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โœ V. V. BYKOV; N. A. BUMAGIN ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 30 KB ๐Ÿ‘ 1 views

Effective Heterogeneous Palladium Catalysis of Reactions of Organoboron Compounds with Aryl Halides. -The reaction of aryl bromides or iodides with arylboron compounds is effectively catalyzed by heterogeneous Pd catalysts, especially Pd-C and Pd-black, to give the cross coupling products [cf. (III