Hey reaction

This is sometimes called the Gomberg or the Gomberg - Hey reaction. 

Gabriel synthesis Gattermaim aldehyde reaction Gattermann reaction Gattermann-Kocll reaction Gomberg-Hey reaction Grignard reaction... 

When the arenediazonium compound 1 is treated with sodium acetate, instead of alkali hydroxide, the reaction proceeds via an intermediate nitroso compound, and is called the Hey reaction. 

Gomberg-Bachmann-Hey reaction org chem Production of diaryl compounds by adding alkali to a mixture of a diazonium salt and a liquid aromatic hydrocarbon or a derivative. gom,berk bak,man hT re.ak shan )... 

The addition of aryl radicals, generated by chemical reduction of aryldiazonium salts, onto arenes in the Gomberg-Hey reaction is well established [163]. The addition of these radicals to alkenes in the Meerwein reaction is also well known [164], Aryl o-radicals generated by electrochemical reduction of aryl halides take part in similar reactions. Good yields of the products are obtained when the intermediate phenyl radical can react in an intramolecular manner. The addition step is then fast and competes successfully with further electron transfer to form the phenyl car-banion, followed by protonation. 

Unsymmetrically substituted biphenyls may be prepared from diazonium salts by means of the Gomberg-Bachmann-Hey reaction.2 Some preparative examples of the classical method and of a PTC procedure are described in Expt 6.79.3... 

The reaction (the Gomberg reaction or Gomberg-Bachmann-Hey reaction) probably involves the intermediate formation of the diazohydroxide, which... 

The effects of substituents upon the orientation of the entering phenyl radical and upon the reactivity of the pyridine nucleus have not received much attention. 4-Picoline is substituted by the 3-pyridyl radical (from the Gomberg-Hey reaction) to give a mixture containing 15% of the product of attack at the a-position (163) and 55% of product of attack at the /3-position (164). A very similar result was... 

The Gomberg-Batchman-Hey reaction is closely related to the Pschorr synthesis and gives unsymmetrical biaryls by treating aryl... 

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