Patents Assigned to Sagami Chemical researckh Center
  • Process for Producing 1-Substituted-3-Fluoroalkylpyrazole-4-Carboxylate
    Publication number: 20080154045
    Abstract: In a process for producing 1-substituted-3-fluoroalkyl-pyrazole-4-carboxylate (3) by a reaction of 2-alkoxymethylenefluoroacylacetate (1) and hydrazine (2), the reaction is conducted in the presence of a base and water, to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3) with high selectivity and yield. This novel process enables to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3), which is useful as an intermediate for pharmaceuticals and agrochemicals, with high selectivity and yield by simple and safe operations.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 26, 2008
    Applicants: Sagami Chemical researckh Center, Japan Finechem Company, INC.
    Inventors: Hidenori Aihara, Wakako Yokota, Tetsu Yamakawa, Kenji Hirai