Synthesis and herbicidal activity of 2-cyano-3-substituted-pyridinemethylaminoacrylates.

doi:10.1021/JF034067S

Paper

Synthesis and herbicidal activity of 2-cyano-3-substituted-pyridinemethylaminoacrylates.

Published Jul 17, 2003 · Qingmin Wang, Huikai Sun, H. Cao

Journal of agricultural and food chemistry

Q1 SJR score

37

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0

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Abstract

Two series of 2-cyano-3-substituted-pyridinemethylaminoacrylates, namely 12 new (Z)-2-cyano-3-methylthio-3-substituted-pyridinemethaneaminoacrylates and 10 new (Z)-2-cyano-3-alkyl-3-substituted-pyridinemethaneaminoacrylates, were synthesized as herbicidal inhibitors of photosystem II (PSII) electron transport. All of these compounds were confirmed by (1)H NMR, elemental, IR, and mass spectrum analyses. Their herbicidal activities were evaluated. Some compounds exhibited excellent herbicidal activities, even at a dose of 75 g/ha. A suitable substituent at the 2-position of the pyridine ring and the well-fit group at the 3-position of acrylate were essential for high herbicidal activity. 2-Cyanoacrylates containing a substituted pyridine ring provide higher herbicidal activities than parent compounds containing phenyl. These PSII inhibitor herbicides are safe to corn, which is a major crop in China.

Study Snapshot

2-cyano-3-substituted-pyridinemethylaminoacrylates show excellent herbicidal activities against corn, with some showing excellent activity at 75 g/ha, and are safe to use as photosystem II inhibitor herbicides.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Synthesis and herbicidal activity of 2-cyano-3-substituted-pyridinemethylaminoacrylates.

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