Patent ID: 6271382
Filing Date: 2001-08-07
Classification: C07B,C07D

Abstract:
A process for preparing an organic compound having a nitroxide free radical of the formula (2): ##STR5##wherein T is a methylene group, an ethylene group, an oxygen atom or a methyleneoxy group; R is an alkyl group, an aralkyl group, an aryl group, a cycloalkyl group, an alkoxy group, an acyl group an acyloxy group, an amino group, a hydroxyl group or a heterocyclic group; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and each is an alkyl group or an aryl group, or R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 together form a tetramethylene group or a pentamethylene group; and n is an integer of 0 to 6, comprising the step of reacting a cyclic secondary amine having a steric hindrance of the formula (1): ##STR6##wherein T, R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n are the same as defined above with a peroxide in the presence of at least 1 part by weight of an organic compound having a cyano group per 1 part by weight of the cyclic secondary amine (1).