Cinnamoylnitrile-, pyran-, and pyranopyrazole-derivatives containing the salicylanilide moiety with anticipated molluscicidal activity.

The reaction of new cinnamonitriles containing the salicylyl moiety with active methylene reagents leads to the formation of the corresponding heterocycles. Their reaction with aniline yields the corresponding salicylanilide derivatives. The obtained pyrans and anilides were tested for molluscicidal activity.