Herbicidal compounds and compositions

TLDR: In this paper, the authors provided a formula for compounds having the formula (1) wherein X is oxygen or sulphur; Y is oxygen and sulphur, and Z is a bond or a chain of 1-5 carbon atoms and/or heteroatoms independently selected from the group consisting of oxygen, nitrogen and sulfur forming ring.

Abstract: The present invention provides compounds having the formula (1) wherein X is oxygen or sulphur; Y is oxygen or sulphur; (A) is a 5-membered heterocyclic ring containing one to three heteroatoms, each independently selected from the group consisting of oxygen, nitrogen and sulphur; P is CR12 or N; Q is CR13 or N; S is CR14 or N; T is CR15 or N; Z is a bond or a chain of 1-5 carbon atoms and/or heteroatoms independently selected from the group consisting of oxygen, nitrogen and sulphur forming ring (B), wherein (B) may contain one or more unsaturated bonds and may be optionally substituted wherein B is not an unsubstituted pyrrolidine, an unsubstituted piperidine, an unsubstituted morpholine or an unsubstituted 3-pyrroline or a pyrrolidine, piperidine, morpholine or 3-pyrroline each substituted with 1-2 C1-C2 alkyl. The present invention further relates to methods used to prepare these compounds, to compositions which comprise these compounds and to their use in agriculture or horticulture for controlling undesirable vegetation.