195814-47-2Relevant academic research and scientific papers
Substituted aromatic phoshonic acid derivatives
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, (2008/06/13)
Phosphonic acid compounds I wherein Eth is optionally substituted 1,2-ethynediyl, ethanediyl or ethene-1,2-diyl; Y1is oxygen or sulfur; Y2is oxygen, sulfur or —N(R6)—; Y3is oxygen, sulfur or —N(R7)—; R1, R2, R6and R7are hydrogen or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or heterocyclyl, or R1and R2, R1and R6, R2and R7together are optionally substituted 1,2-ethanediyl, 1,3-propylene, tetramethylene, pentamethylene or ethyleneoxyethylene, or R1and R2together are optionally substituted 1,2-phenylene; R3is cyano, halogen, alkyl, haloalkyl, alkoxy or haloalkoxy; R4is hydrogen or halogen, and R5is a heterocycle Φ1to Φ22as defined in the specification, their manufacture and intermediates therefore. The phosphonic acid compounds are effective against unwanted plants and act as desiccants and defoliants.
