Ciba Specialty Chemicals Corporation

Hanspeter Baier

Frank Bachmann

Cornelia Makowka

Claus Korhummel

Menno Hazenkamp

Marie-Josée Dubs

Uwe Heinz

Christof Dosenbach

Gerhard Beck

Bernd Kirrmann

Reiner Linde

Tassilo Habereder

This invention relates to a novel crystal form of the 1:1 manganese (III) complex of N,N',N&#x2033;tris[salicylideneaminoethyl]amine, a process for its preparation and the use thereof.

Crystalline modification of a manganese complex

A process for the preparation of manganese complexes of salen compounds which comprises carrying out the reaction of a salen compound with a manganese compound in DMF is described. In a preferred embodiment, the salen compound itself is synthesised likewise in DMF and reacted without intermediate isolation to form the manganese complex.

Process for the preparation of manganese complexes of salen compounds

The present invention provides a process for the production of an N,N-dialkylaminophenyl alkanol having the formula: ##STR1## in which R.sub.1 and R.sub.2, independently, are C.sub.1 -C.sub.4 alkyl, R.sub.3 is hydrogen, halogen, cyano, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy and n is an integer from 1 to 4, comprising reacting an aminophenyl alkanol having the formula: ##STR2## in which R.sub.3 and n have their previous significance, with at least two moles of a dialkylsulfate having the formula: ##STR3## in which R.sub.1 and R.sub.2 have their previous significance. N,N-dialkylaminophenyl alkanols so obtained are valuable as intermediates for a wide range of end-products and are also useful, e.g., as accelerators for the peroxide-catalyzed polymerization of vinyl monomers, especially in polymerizable or curable formulations employed in dental applications.

Process for the preparation of N,N- dialkylaminophenyl alkanols

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Grenzach-Wyhlen, Germany

Hanspeter Baier