Patent ID: 8895757

Claim:
A process for the preparation of the compound of formula I which process comprises acylating the oxime oxygen of the compound of formula VIII in the presence of a solvent and an acylating agent of formula XI R 1 —C(X)—Cl (XI), wherein X is oxygen or sulfur; R 1 is chloro if X is oxygen or sulfur; or R 1 is C 1 -C 6 alkoxy, CH 3 —C(═CH 2 )—O—, phenoxy or trichloromethoxy if X is oxygen; and a) if R 1 is chloro and the compound of formula XI was added to the compound of formula VIII; reacting the so obtained product of formula XIIa wherein X is oxygen or sulfur; with the compound of formula IX or b) if R 1 is chloro and the compound of formula VIII was added to the compound of formula XI; or R 1 is C 1 -C 6 alkoxy, CH 3 —C(═CH 2 )—O—, phenoxy or trichloromethoxy if X is oxygen; reacting the so obtained product of formula XII wherein X is oxygen or sulfur; R 1 is chloro if X is oxygen or sulfur; or R 1 is C 1 -C 6 alkoxy, CH 3 —C(═CH 2 )—O—, phenoxy or trichloromethoxy if X is oxygen; with the compound of formula IX