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Abstract

A process is described for catalytically preparing optionally substituted aromatic or heteroaromatic nitrites of the general formula (I)

description='In-line Formulae' end='lead'Ar—CN  (I)description='In-line Formulae' end='tail'

by reacting the corresponding aryl halides of the general formula (II)

description='In-line Formulae' end='lead'Ar—X  (II)description='In-line Formulae' end='tail'

in which

X is chlorine, bromine, iodine, triflate, nonaflate, mesylate or tosylate andAr is an optionally substituted aromatic or heteroaromatic radical,characterized in that the reaction is performed in the presence of a palladium compound, a phosphine of the general formula (III) or (IV)

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