Acid esters of 2 - (4 - (6 - halogen - quinoxalinil - 2 - oxo) - phenoxy) - propionic, process for the preparation of the compounds, herbicides and plant growth regulators.Process for combating undesired growth and influence the growth of plants and use

摘要

The invention relates to novel 2-[4-(6-haloquinoxalinyl-2-oxy)phenoxy]propionates with herbicidal and plant growth regulating properties and having good selectivity in different crops of cultivated plants. The novel compounds have the general formula I IMAGE (I) wherein X is fluorine, chlorine or bromine, Z is oxygen or sulfur, A is a C1-C4alkylene bridge which is unsubstituted or substituted by methyl or ethyl, and R is C1-C4alkyl.