Inventors:
James A. Baron - Hilliard OH
Vittorio Farina - Wilton CT
Nizar Haddad - Danbury CT
Assignee:
Boehringer Ingelheim Pharmaceuticals, Inc. - Ridgefield CT
International Classification:
C07D40304
US Classification:
544333, 544405, 546144, 546167, 5462754, 5483641, 5483714, 5483761, 5483731, 5483771
Abstract:
Disclosed is a process of making substituted pyrazoles from substituted benzophenone hydrazones with a variety of 1,3-bifunctional substrates under acid conditions. The pyrazole compounds are useful for making pharmaceutical compounds.