- IMINIUM SALTS AND METHODS OF PREPARING ELECTRON DEFICIENT OLEFINS USING SUCH NOVEL IMINIUM SALTS
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This invention relates to novel iminium salts, which may be in the form of ionic liquids, and a process for producing electron deficient olefins, such as 2-cyanoacrylates, using such an iminium salt, for instance in the form of an ionic liquid.
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Page/Page column 32-33
(2008/12/05)
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- Synthesis and herbicidal activity of 2-cyano-3-substituted-pyridinemethylaminoacrylates
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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 1H 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.
- Wang, Qingmin,Sun, Huikai,Cao, Huanyan,Cheng, Muru,Huang, Runqiu
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p. 5030 - 5035
(2007/10/03)
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- ESTERIFICATION OF CARBOXYLIC ACIDS WITH ALLYL ALCOHOL
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The kinetics of the esterification of substituted carboxylic acids with allyl alcohol were studied.The reaction is of first order in the catalyst and in the substrate, and the equilibrium under the investigated conditions is shifted toward the formation of the ester.The observed enthalpy of activation does not depend on the substituent, and the difference in the reactivities of the investigated compounds is determined entirely by the entropy component of the free energy.
- D'yachkov, A. I.,Likhterov, V. R.,Etlis, V. S.
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p. 829 - 832
(2007/10/02)
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