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Gomberg reaction, improve

Gomberg-Bachmann pinacol synthesis 1, 689 Gomberg reaction, improved 16, 842... [Pg.324]

Improved Gomberg reaction Phenylation by diazo coupling... [Pg.199]

The Gomberg-Bachmann reaction is usually conducted in a two-phase system, an aqueous alkaline solution, that also contains the arenediazonium salt, and an organic layer containing the other aromatic reactant. Yields can be improved by use of a phase transfer catalyst. Otherwise yields often are below 40%, due to various side reactions taking place. The Pschorr reaction generally gives better yields. [Pg.141]

Of preparative interest is the improvement effected in the Gomberg-Bachmann-Hey arylation of thiophene by conducting the reaction in a non-aqueous solvent with 18-crown-6 as catalyst (80T3327). [Pg.780]

See other pages where Gomberg reaction, improve is mentioned: [Pg.232]    [Pg.232]    [Pg.333]    [Pg.333]    [Pg.381]    [Pg.384]    [Pg.629]    [Pg.445]    [Pg.254]    [Pg.507]    [Pg.564]    [Pg.139]    [Pg.38]    [Pg.244]    [Pg.38]    [Pg.244]    [Pg.121]   
See also in sourсe #XX -- [ Pg.16 ]

See also in sourсe #XX -- [ Pg.16 ]



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