2-PHENOXYPROPIONIC ACID DERIVATIVES OF PENTITES AND HERBICIDAL COMPOSITIONS

New 2-phenoxy propionic acid derivatives of pentite are disclosed, of the general Formula I in which one of the substituents Y is the group and pairs of other substituents Y are the group wherein Z is phenyl, 2-pyridyl, or 2-quinoxalinyl, or phenyl, 2-pyridyl or 2-quinoxalinyl substituted one or more times the same or differently by halogen, C1-C6-alkoxy, C1-C6-alkyl, nitro or trifluoromethyl and R1 and R2 are the same or different and are each hydrogen, C1-C10-alkyl, C1-C10-alkyl substituted one or more times the same or differently by halogen, C1-C6-alkoxy, phenoxy or halogen phenoxy, aryl-C1-C3-alkyl, aryl-C1-C3-alkyl substituted one or more times the same or differently by C1-C6-alkyl, halogen, C1-C6-alkoxy, nitro or trifluoromethyl, C3-C6-cycloaliphatic hydrocarbon, aromatic hydrocarbon or aromatic hydrocarbon substituted one or more times the same or differently by C1-C6-alkyl, halogen, C1-C6-alkoxy, nitro or trifluoromethyl, or R1 and R2 together with the C-atom to which they are both bonded are a C3-C8-cycloaliphatic hydrocarbon, along with processes for the production of these compounds as well as compositions containing the same and having herbicidal effectiveness.