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process for the production of new 3.4 - dihydro - 1,2,4 - triazinen and three compounds of this type and its use

机译:新型3.4-二氢-1,2,4-三嗪酮和三种这种类型化合物的制备方法及其应用

摘要

Novel 3,4-dihydro-1,2,4-triazine compounds of the formula IN WHICH R1 is alkyl or cycloalkyl; R2 is methyl, amino, alkylideneamino, methylamino, beta -hydroxyethylamino, 2-furylmethylamino, aralkylamino or substituted aralkylamino; and R3 is alkyl, aryl or substituted aryl; ARE PREPARED BY REACTING THE CORRESPONDING 1,2,4-TRIAZIN-5-ONE WITH SODIUM BOROHYDRIDE IN THE PRESENCE OF A POLAR SOLVENT AT A TEMPERATURE BETWEEN -10 DEG AND +25 DEG C. The novel compounds are outstandingly effective as herbicides and display particularly selective action.
机译:其中R 1为式的新型3,4-二氢-1,2,4-三嗪化合物为烷基或环烷基; R2是甲基,氨基,亚烷基氨基,甲基氨基,β-羟乙基氨基,2-呋喃基甲基氨基,芳烷基氨基或取代的芳烷基氨基; R3为烷基,芳基或取代的芳基;在极性溶剂存在的情况下,在-10至+25℃的温度下,通过与相应的1,2,4-三嗪-5-酮与硼氢化钠反应来制备。该新型化合物作为除草剂和展示剂非常有效特别是选择性的动作。

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