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In an attempt to discover novel compounds with high activity and low toxicity, a series of new O,O-dimethyl-α-(substituted phenoxyacetoxy)-2-pyridyl methyl phosphinates, 5a-5h, have been designed and synthesized by the reaction of substituted phenoxyacetic chloride with 1-hydroxy-2-pyridyl methyl phosphinate, The structures of all new compounds were characterized by elementary analysis, IR, 1H NMR, and MS spectroscopies. The results of preliminary bioassay indicate that most of the target compounds have excellent inhibitory activities on barnyard grass and rape. [ABSTRACT FROM AUTHOR]

Someα-OxoPhosphonate monolithium salts were synthesized by a facile one-step procedure. In this way,α-(2,4-dichlorophenoxyacetoxy)alkyl phosphonic acid dimethyl esters5can be transformed into the corresponding phosophonate monolithium salts6without influence on the carboxylic ester group under mild conditions. [ABSTRACT FROM AUTHOR]

Eight of novel fluoro-substituted phosphonate derivatives were synthesized and the preliminary bioassay indicated that these compounds exhibited herbicidal activities. [ABSTRACT FROM AUTHOR]

Ten α-hydroxyphosphates were synthesized and the preliminary bioessay indicated that these compounds exhibited certain herbicidal activities. [ABSTRACT FROM AUTHOR]

A new and facile route to synthesize 2-substituted pyrano[2,3-d]pyrimidin-4(3H)-ones derivatives using iminophosphorane from easily obtained starting materials was investigated and expanded. [ABSTRACT FROM AUTHOR]

A series of sodium methyl α-(substituted phenoxy acetoxy)-alkyl phosphinates were synthesized under mild condition by a simple efficient procedure. [ABSTRACT FROM AUTHOR]

A series of bicycli caged phosphates were synthesized, and biological activity test showed that the title compounds exhibited moderate herbicidal activity. [ABSTRACT FROM AUTHOR]

Fourteen of phosphonates containing quinoline were synthesized and the preliminary bioassay indicated that these compounds exhibited a little better fungicidal and lower herbicidal activities than the starting compound Quinclorac. [ABSTRACT FROM AUTHOR]