PREPARATION PROCESS OF PROPYNYL AMINOISOXAZOLE DERIVATIVES

摘要

Titled compound (I) is prepared by iodation of compound (II). In formulas, R1 and R2 are H, C1-10 alkyl, C1-4 alkoxy, C3-8 cycloalkyl, halogen, A-CH2-, B-, B-CH2- or B-CH2O (A=C1-4 alkoxy or mono-, di-C1-4 alkylamino, B=substituted phenyl, furyl or imidazolil), respectively; R3, R4 are hydrogen or C1-4 alkyl, respectively.