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AssigneeBayer CropScience AG
InventorsJean-Francois Rousseau, Albert Buforn
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A process for the preparation of a compound of the formula (I): 1 wherein R1 is CN or CSNH2; X is N or CR4; R2 and R4 are each independently hydrogen or chloro; R3 is halo, haloalkyl, haloalkoxy or —SF5; R5 and R6 are each independently alkyl and n is 0, 1 or 2; said process comprising reacting a compound of the formula (II): 2 wherein the symbols are as defined above and W is H, with an alkylating agent of the formula (III): R6—Y (III) wherein R6 is as defined above and Y is a leaving group. The process may also be conducted by reacting a compound of formula (II) initially with an inorganic salt or an organic base, and reacting the resultant salt of the compound of formula (II) with the alkylating agent.
A process for the preparation of a compound of General Formula (I):
A process as claimed in any one of the preceding claims carried out in the presence of a solvent.
A process as claimed in any one of the preceding claims wherein steps 1 and 2 are carried out in the presence of a base
A process as claimed in any one of the preceding claims in which the inorganic salt is potassium carbonate or potassium hydroxide.
A process as claimed in any one of the preceding claims in which the organic base is an amine selected from triethyl amine, pyrridine and the like.
A process as claimed in any one of the preceding claims in which the compound of General Formula (II) is reacted with the metal salt or the organic base in a ratio of at least one equivalents, preferably 2 equivalents.
A process as claimed in any one of the preceding claims in which the compound of General Formula II has representations R1 is CN;
Novel compound as claimed as the intermediate compound as defined on any one of the preceding claims according to General Formula (II) wherein W is an inorganic salt or an organic base
Dependencies are inferred from the claim text.