Patent ID: 7453001
Filing Date: 2008-11-18
Classification: C07D

Abstract:
1. A process of producing an isoxazole derivative represented by the following formula (I): (wherein: R R R R n represents 0, 1, 2, 3 or 4), which comprises reacting a compound represented by the following formula (II): (wherein R 1 , R 2 and R 3 are the same as stated above; Z represents —O − M + (wherein M represents Na, K or NEt 3 ), oxo or hydroxy group; and the dotted line represents a chemical bond when Z is —O − M + or hydroxy group) with a compound represented by the following formula (III): (wherein R 4 , R 5 and n are the same as stated above; and Y represents —CNO) in the absence of a solvent or in a solvent inert to the reaction.