wherein A is a straight or branched chain alkylene of 2 to 6 carbon atoms, X is selected from the group consisting of hydrogen, halogen, -CF3, -NO2, acyl of an organic carboxylic acid of 1 to 6 carbon atoms, alkyl and alkoxy of 1 to 6 carbon atoms and alkenyloxy of 2 to 6 carbon atoms optionally substituted with halogen, Y is selected from the group consisting of hydrogen, halogen and alkyl and alkoxy of 1 to 6 carbon atoms and R is selected from the group consisting of alkoxy of 1 to 4 carbon atoms, alkoxycarbonyl of 2 to 6 carbon atoms and chloroacetyl which have herbicidal properties.
Abstract:
UREA AND THIOUREA DERIVATIVES OF FORMULA I:
2-((X,Y-PHENYL)-NH-C(=NH)-N(-R)-)TETRAHYDROPYRAN
WHEREIN R REPRESENTS A LOWER ALKYL RADICAL, X AND Y, IDENTICAL OR DIFFERENT, ARE SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM, A CHLORINE ATOM, A BROMINE ATOM, A NITRO RADICAL, A TRIFLUOROMETHYL RADICAL, A LOWER ALKYLOXY RADICAL, A LOWER ALKYL RADICAL, A LOWER ALKENYLOXY RADICAL, A HALOGEN-SUBSTITUTED LOWER ALKENYLOXY RADICAL, A LOWER ALKYLOXYCARBONYL RADICAL, A LOWER ALKYLTHIO RADICAL, A LOWER ALKYLSULFINYL RADICAL AND A LOWER ALKYLSULFONYL RADICAL, AND Z IS SELECTED FROM THE GROUP CONSISTING OF AN OXYGEN ATOM AND A SULFUR ATOM, PROCESS FOR THEIR PREPARATION, COMPOSITIONS CONTAINING THEM, AND PESTICIDAL METHOD. THE DERIVATIVES OF FORMULA I POSSESS PESTICIDAL, PARTICULARLY HERBICIDAL PROPERTIES.