Basf Se Corporation

Martin Von Büren

Markus Grob

Frédéric Brunner

Daisuke Fujiki

Peter Nesvadba

Lucienne Bugnon

Benjamin Breitenstein

Christoph Kleiner

Matthias Von Frieling

André Geoffroy

André Schmitter

Daniel Thibaut

The crystalline form of 2-(4,6-bis-biphenyl-4-yl-1,3,5-triazin-2-yl)-5-(2-ethyl-(n)-hexyloxy)phenol, characterized by a melting range of 118-126&#xb0; C.

Crystalline form of 2-(4,6-bis-biphenyl-4-yl-1,3,5-triazin-2-yl)-5-(2-ethyl-(n)-hexyloxy)phenol

The invention relates to a process for the preparation of secondary nitroxide radicals from their corresponding secondary amines by oxidation with an organic peracid, comprising the steps a) adding to a reaction vessel a secondary amine, optionally together with an organic solvent and in one batch a base selected from the group consisting of alkali metal, alkaline earth metal or ammonium bicarbonates and alkaline earth metal or ammonium carbonates or mixtures thereof in the form of a solid together with water or as an aqueous slurry; b) dosing a peracid under stirring to the reaction mixture in an amount of 1.0 to 2.5 mol per mol of secondary amine; and c) isolating the organic phase.

Process for the oxidation of secondary amines into the corresponding nitroxides

The crystalline form of 2-(4,6-bis-biphenyl-4-yl-1,3,5-triazin-2-yl)-5-(2-ethyl-(n)-hexyloxy)phenol, characterized by a X-ray diffraction pattern obtained by using Cu&#x2014;K&#x3b1;-radiation which exhibits the diffraction angles (2-Theta).

Growing community of inventors

Muttenz, Switzerland

Martin Von Büren