C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/65 (2006.01) C07C 57/60 (2006.01) C07C 67/343 (2006.01) C07C 219/10 (2006.01) C07C 233/18 (2006.01) C07C 245/20 (2006.01) C07D 303/44 (2006.01) C07D 307/42 (2006.01)
Patent
CA 2112955
Abstract of the disclosure The present invention relates to compounds of the formula Image (I), in which R1 and R2 are identical or different and are hydrogen or an alkyl radical having 1 to 18 carbon atoms and optionally containing oxygen, nitrogen or halogen, the radicals X, Y and Z are identical and are a fluorine, bromine or iodine atom or if two of the radicals X, Y or Z are identical or all of the radicals X, Y, Z are different from each other, X, Y and Z are a fluorine, chlorine, bromine or iodine atom. The invention further relates to a process for the preparation of the com- pounds, by reacting an aryldiazonium salt of the formula Image (II), in which the radicals X, Y and Z are identical and are a fluorine, bromine or iodine atom or, if two of the radicals X, Y and Z are identical or all of the radicals X, Y, Z are different from each other, X, Y and Z are a fluorine, chlorine, bromine or iodine atom and A(-) is an anion of an acid having a pKa < 7, with a compound of the formula Image in which R1 and R2 are identical or different and are hydrogen or an alkyl radical having 1 to 18 carbon atoms and optionally containing oxygen, nitrogen or halogen, in the presence of a palladium-containing catalyst, if appropriate with addition of a base, and the aryldiazonium salts of the formula (II).
Beller Matthias
Fischer Hartmut
Forstinger Klaus
Pfirmann Ralf
Strutz Heinz
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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