- Method for preparing mepanipyrim
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The invention provides a preparation method of mepanipyrim and belongs to the field of pesticide chemical synthesis technologies. The preparation method of the mepanipyrim comprises the following steps: firstly, reacting phenyl guanidine salt with ethyl acetoacetate so as to prepare phenylamino pyrimidone, reacting the phenylamino pyrimidone with phosphorus oxychloride so as to prepare 2-chloro-pyrimidine phenylamine; subsequently, carrying out coupling and crossing reaction between the 2-chloro-pyrimidine phenylamine and alkyne so as to prepare mepanipyrim. The preparation method of mepanipyrim has the advantages that the used raw materials and reagents are cheap and easily available; the reaction process is simple, the reaction conditions are mild, the cost is low, the yield is high, a good condition is created for industrial large-scale production and commercialization of the products.
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- Regio- And chemoselective metalation of chloropyrimidine derivatives with TMPMgCl·LiCl and TMP2Zn·2MgCl2·2 LiCl
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Efficient zincation and magnesiation of chlorinated pyrimidines can be performed at convenient temperatures (e.g., 25 and 55°C) by using TMPMgCl·LiCl and TMP2Zn·2 MgCl2·2LiCl (TMP = 2,2,6,6-tetramethylpiperidyl) as effective bases. Q
- Mosrin, Marc,Knochel, Paul
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experimental part
p. 1468 - 1477
(2009/08/07)
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- Arylphenyl-substituted cyclic keto enols
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The present invention relates to novel arylphenyl-substituted cyclic ketoenols, their preparation and the use of such ketoenols as pesticides and/or herbicides. The novel arylphenyl-substituted cyclic ketoenols are of the formula (I) in which CKE refers to the cyclic ketoenol and W, X, Y and Z are as defined in the specification.
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- Anilinopyrimidine derivatives
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Anilinopyrimidine derivatives of the formula: STR1 wherein R is --CH2 C(O)CH3 or --CH=C(Cl)CH3, are useful as intermediates in the production of anilinopyrimidine fungicides.
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- Pyrimidine derivative, process for preparing same and agricultural or horticultural fungicidal composition containing same
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Disclosed are pyrimidine derivatives represented by general formula STR1 wherein Z1 represents an alkynyl group, an alkenyl group, an alkoxy group, an alkenyloxy group, or an alkynyloxy group which may be substituted with a halogen atom, and Z2 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, or a group of the formula STR2 where Z3 represents a hydrogen atom or a methyl group; or its salt; and processes for preparing same. Also, agricultural or horticultural compositions containing the pyrimidine derivatives as active ingredient are disclosed, which show high controlling activities for cucumber gray mold (Botrytis cinerea), cucumber downey mildew (Pseudoperonospora cubensis), Alternaria sooty spot of Chinese mustard (Alternaria brassicicola), rice blast (Pyricularia oryzae), etc.
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