| abstract |
The present invention relates to a process for preparing a compound of the formula (I), wherein the general symbols are as defined in claim 1, wherein the compound of the formula (II) Disclosed is a method comprising reacting a compound of the formula (III) with a compound of the formula (III), wherein R 5 is as defined in claim 1. The compounds of formula (II) are novel and are useful as stabilizers to protect organic materials, especially synthetic polymers, copying or coating materials, against oxidation, heat or light-induced degradation. |