| abstract |
The present invention relates to a process for the preparation of isoxazoles of the formula I DOLLAR F1, where the substituents have the following meanings: DOLLAR AR · 1 ·, R · 2 · hydrogen, C¶1¶-C¶6¶-alkyl, DOLLAR AR · 3 ·, R · 4 ·, R · 5 · hydrogen, C¶1¶-C¶6¶-alkyl or R · 4 · and R · 5 · together form a bond, DOLLAR AR · 6 · heterocyclic ring, DOLLAR A n 0, 1 or 2; DOLLAR A comprising the preparation of an intermediate compound of the formula VI DOLLAR F2 where R · 1 ·, R · 3 ·, R · 4 · and R · 5 · have the meanings given above, and subsequent halogenation, thiomethylation, oxidation and acylation to give compounds of Formula I. DOLLAR A The invention further relates to new intermediates for the preparation of the compounds of formula I. |