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    • 7. 发明授权
    • Method of alkylating of triazine derivatives
    • 烷基化三嗪衍生物的方法
    • US5792867A
    • 1998-08-11
    • US571828
    • 1996-02-05
    • Norio TanakaMasataka HatanakaMakoto IshikawaYasuo FukueIsao HashibaYoshihisa Watanabe
    • Norio TanakaMasataka HatanakaMakoto IshikawaYasuo FukueIsao HashibaYoshihisa Watanabe
    • C07D251/16C07D251/18C07D251/52C07D251/70C07D251/54
    • C07D251/70C07D251/16C07D251/18C07D251/52
    • A method for alkylation of at least one or more amino groups or mono-substituted amino groups, each on a carbon atom of a triazine ring of 1,3,5-triazine derivatives (melamine, melamine derivatives and various kinds of guanamine derivatives and the like), which includes reacting the 1,3,5-triazine derivatives having at least one or more amino groups or mono-substituted amino groups with alcohols in the presence of a catalyst of a metal of group VII and/or group VIII in the periodic table. The object of the invention is to provide a method for alkylation of 1,3,5-triazine derivatives, which includes alkylating amino groups or mono-substituted amino groups in carbon atoms of a 1,3,5-triazine ring, whereby substituted 1,3,5-triazine derivatives which are a group of useful compounds and which are widely used as intermediates of fine chemicals such as agricultural chemicals, medications, dye-stuffs, paints and the like, as resin materials and as flame-retardant materials can be easily produced in high yields.
    • PCT No.PCT / JP94 / 01190 Sec。 371日期:1996年2月5日 102(e)日期1996年2月5日PCT提交1994年7月20日PCT公布。 出版物WO95 / 03287 日期1995年2月2日在1,3,5-三嗪衍生物(三聚氰胺,三聚氰胺衍生物等)的三嗪环的碳原子上烷基化至少一个以上的氨基或单取代氨基的方法 胍胺衍生物等),其包括使具有至少一个或多个氨基或单取代氨基的1,3,5-三嗪衍生物与醇在VII族金属和/ 或周期表中的VIII族。 本发明的目的是提供一种1,3,5-三嗪衍生物的烷基化方法,其包括在1,3,5-三嗪环的碳原子中烷基化氨基或单取代氨基,由此取代1 作为有用化合物的一组的3,5-三嗪衍生物,广泛用作农药,药物,染料,油漆等精细化学品的中间体作为树脂材料和阻燃材料, 容易以高产量生产。
    • 10. 发明授权
    • Process for preparation of 4,6-diaminoresorcinol or salts thereof
    • 制备4,6-二氨基间苯二酚或其盐的方法
    • US06222074B1
    • 2001-04-24
    • US09600551
    • 2000-07-25
    • Kenichi TokunagaMotohito ShiratoriKazuhiko AkimotoHideo SuzukiIsao Hashiba
    • Kenichi TokunagaMotohito ShiratoriKazuhiko AkimotoHideo SuzukiIsao Hashiba
    • C07C21302
    • C07C213/02C07C215/80
    • The invention relates to a process for preparation of 4,6-diaminoresorcinol or salts thereof by reducing 4,6-bis(substituted)phenylazoresorcinol expressed by the formula [1] wherein, R denotes a halogen atom, an alkyl group having 1-5 carbon atoms, a hydroxycarbonyl group or an alkoxy group having 1-5 carbon atoms, n denotes 0 or any integer of 1-5, and two or more groups R may be same or different each other, for example, 4,6-bisphenylazoresorcinol, with hydrogen in the presence of a metal catalyst to obtain 4,6-diaminoresorcinol or salts thereof, characterized in that an aliphatic nitrile compound (for example, acetonitrile) is used as a solvent, or characterized in that the reduction is carried out by using at least one organic solvent selected from aliphatic nitrile compounds, aliphatic alcohols having 3-5 carbon atoms, dioxane and ethylene glycol monomethyl ether, etc. as a solvent and furthermore in the presence of a filter aid (for example, active carbon). According to the said preparation process, 4,6-diaminoresorcinol with high purity can be easily obtained from 4,6-bis(substituted)phenylazoresorcinol in a high yield.
    • 本发明涉及通过还原由式[1]表示的4,6-双(取代的)苯基次氮杂环戊烯来制备4,6-二氨基间苯二酚或其盐的方法,其中R表示卤素原子,具有1-5个 碳原子,羟基羰基或具有1-5个碳原子的烷氧基,n表示0或1-5的整数,并且两个或更多个基团R可以相同或不同,例如,4,6-双苯​​并苯并氮杂酚 在金属催化剂存在下用氢气得到4,6-二氨基间苯二酚或其盐,其特征在于使用脂族腈化合物(例如乙腈)作为溶剂,或其特征在于还原是通过 使用至少一种选自脂族腈化合物,具有3-5个碳原子的脂族醇,二恶烷和乙二醇单甲醚等作为溶剂的有机溶剂,并且在助滤剂(例如活性炭)存在下进行。 根据所述制备方法,可以从4,6-双(取代)苯基次氮基间苯二酚以高产率容易地得到高纯度的4,6-二氨基间苯二酚。