| abstract |
A process is described for preparing isoxazoles of the formula I n n n n n n n n n n where the substituents are as defined below: n R 1 is hydrogen, C 1 -C 6 -alkyl, n R 2 is C 1 -C 6 -alkyl, n R 3 , R 4 , R 5 are hydrogen, C 1 -C 6 -alkyl, or R 4 and R 5 together form a bond, n R 6 is a heterocyclic ring, n n is 0, 1 or 2; n which comprises preparing an intermediate of the formula VI n n n n n n n n n n n n where R1, R3, R4 and R5 are as defined above, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of the formula I. n n n Also novel intermediates for preparing the compounds of the formula I and novel processes for preparing the intermediates are described. |