Patent ID: 7663001
Filing Date: 2010-02-16
Classification: C07C,C07D

Abstract:
1. A process for preparing a compound of formula XV in which X is NO R R m is 1, 2, 3 or 4, and n is 2, or a corresponding aldehyde, nitrile or nitrile oxide, which comprises reacting a compound of the formula XVI in which X and (R with an organic nitrite of the formula R—O—NO, where R is an aliphatic or aromatic radical, in the presence of a base, to obtain the compound of the formula XV, and optionally converting the oxime group —CH═NOH in formula XV into an aldehyde moiety (—CHO), a nitrile (—CN) or a nitrile oxide (—CHO), wherein the reaction is carried out at a temperature below −20° C. in the presence of a dipolar aprotic solvent.