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    • 7. 发明授权
    • Method for preparing azines
    • 制备吖嗪的方法
    • US3919256A
    • 1975-11-11
    • US34076273
    • 1973-03-13
    • SCHIRMANN JEAN PIERRETELLIER PIERREMATHAIS HENRIWEISS FRANCIS
    • SCHIRMANN JEAN-PIERRETELLIER PIERREMATHAIS HENRIWEISS FRANCIS
    • C07C251/88C07C20060101C07C67/00C07C241/00C07C109/00
    • C07C251/88
    • wherein R1, R2, R3 and R4 each have the same meaning defined above to provide the azine or mixture of azines.

      or

      alone or together with a different carbonyl compound

      and mixtures of azines (I), (II) and (IV) and (I), (III) and (V), wherein R1, R2, R3 and R4 each is a hydrogen atom, a straight chain alkyl radical of from 1 to 12 carbon atoms, a branched chain alkyl radical or unsubstituted or alkyl substituted cycloalkyl radical of from 3 to 12 carbon atoms, a hydrocarbon radical of from 6 to 12 carbon atoms containing an aromatic nucleus; further provided that R1 and R2 can be the same or different radicals, and R3 and R4 are the same or different radicals and each are different from R1 and R2; or R1 and R2 and R3 or R3 and R4 bonded to the same carbon atom together form an unsubstituted or aliphatic substituted alkylene radical of from 3 to 11 carbon atoms, each of the aforesaid radicals being unsubstituted or substituted with one or more radicals which are stable in the medium in which the azines are produced. The method comprises reacting a cyanated compound (VI) with hydrogen peroxide in the presence of a carbonyl compound of the formula

      and unsymmetrical azines of the formulas

      A method is disclosed for preparing symmetrical azines of the formulas
    • 公开了一种用于制备式R1R1的对称吖嗪的方法。方法C = NN = C ANGLE(I)R2R2 R1R1角度C = NN = C角度(II)R3R3 R3R3角度C = NN = C角度(III)R4R4和不对称吖嗪 式(I),(II)和(IV)和(I),(III)的混合物,其中R 1,R 2,R 3,R 3,R 3, 和(V),其中R 1,R 2,R 3和R 4各自为氢原子,具有1至12个碳原子的直链烷基,支链烷基或未取代的或烷基取代的3至12个碳原子的环烷基 原子,含有6至12个碳原子的含有芳香核的烃基; 进一步提供R1和R2可以相同或不同的基团,并且R3和R4是相同或不同的基团,并且各自不同于R1和R2; 或者R 1和R 2以及与相同碳原子键合的R 3或R 3和R 4一起形成3至11个碳原子的未取代或脂族取代的亚烷基,上述每个基团是未取代的或被一个或多个稳定的基团取代 在其中产生吖嗪的介质中。