- AGRICULTURAL CHEMICALS
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The present invention relates to benzimidazole and benzotriazole compounds which are of use in the field of agriculture as fungicides.
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Page/Page column 33
(2019/08/08)
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- Studies on the Regioselective Halogenation of 4-Amino-2-iodomethyl-6-methylpyrimidines
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In the presence of oxidants, 4-amino-2-iodomethyl-6-methylpyrimidines 2 undergo regioselective reactions in the position 2 and/or 5.Thus, the reaction of 2a with hydrogen peroxide proceeds under dealkylation and iodination to give 4-amino-5-iodo-6-methylpyrimidine 7.Depending on reaction temperature and molar ratios the reaction of 2a with bromine or chlorine leads to the corresponding 4-amino-5-halogeno-2-halogenomethyl-6-methylpyrimidines 2c, 9a and 9d.The 5-substituted pyrimidines 2b, c afford the 2-bromo (or chloro) methyl derivatives 9b, c.
- Zeuner, F.,Niclas, H.-J.
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p. 324 - 330
(2007/10/02)
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