Patents Assigned to Shionogi & Co., Inc.
  • Preparation of imidazoles
    Patent number: 5312927
    Abstract: The present invention relates to preparation of imidazoles which are useful as pharmaceutical and agricultural chemicals. Specifically, the present invention relates to a process for preparing imidazoles of the formula (I): ##STR1## which comprises conducting condensation among an .alpha.,.alpha.-dihaloaldehyde compound of the formula (II): ##STR2## an aldehyde compound of the formula: R.sup.2 --CHO and aqueous ammonia.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: May 17, 1994
    Assignee: Shionogi & Co., Inc.
    Inventors: Susumu Takada, Makoto Adachi