Certain 3-oxo-2-aryl-5,6-dihydro-4(H)-pyrrolo-(1,2-C)(1,2,3)triazolium compounds

Abstract

A process for inhibiting plant growth comprising contacting a plant or its growth area with an effective amount of certain para-halophenyl substituted triazolines. A series of novel mesoionic para-halophenyl substituted triazolines. A novel process for preparing 3-phenyl-4-oxo-1,2,3-triazoline by contacting benzenediazoniumchloride and an .alpha.-amino carboxylic acid and cyclodehydrating the triazene produced using acetic anhydride and pyridine.

Dependencies are inferred from the claim text.