Preparation of phenoxy-azolyl-butanone derivatives

Details Preparation of phenoxy-azolyl-butanone derivatives Preparation of phenoxy-azolyl-butanone derivatives

C - Chemistry, Metallurgy

07

D

260/313, 260/315

C07D 233/60 (2006.01) C07D 249/08 (2006.01) C07D 521/00 (2006.01)

Patent

CA 1164465

ABSTRACT In the preparation of a phenoxy-azolyl-butanone derivative of the formula Image in which X is a halogen atom, Y is a hydrogen or halogen atom, and Az is an imidazolyl radical or a 1,2,4-triazolyl radical, wherein dichloropinacolin of the formula C12CH-CO-C(CH3)3 is reacted with an azole of the formula Az-H and a phenol of the formula Image in the presence of an acid-binding agent, the improvement which comprises carrying out the reaction in the presence of a water- immiscible organic solvent at a temperature between about 40 and 150°C, adding to the solvent at a temperature between about 0 and +80°C a mineral acid, thereby to precipitate the mineral acid salt of the phenoxy-azolyl-butanone derivative, and separating such salt. Surprisingly the product does not hydrolyze when standing in contact with the mineral acid solution. The product is a known fungicide.

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