Patent ID: 8507694
Filing Date: 2013-08-13
Classification: C07C,C07D

Abstract:
1. A process for the preparation of the compound of formula I which process comprises a) reacting the compound of formula II in the presence of a catalyst in a suitable organic solvent with the compound of formula III to the compound of formula IV b) hydrogenating the compound of formula IV in the presence of a metal catalyst to the compound of formula V c) reducing the compound of formula V in the presence of a reducing agent to the compound of formula VI d) dehydrating the compound of formula VI in the presence of an acid to the compound of formula VII e) reacting the compound of formula VII with hydroxylamine to the compound of formula VIII and f) acylating the oxime oxygen of the compound of formula VIII in the presence of a solvent and an acylating agent and finally reacting the obtained product with the compound of formula IX or ff) reacting the compound of formula VIII with an excess of the compound of formula IX.