CAS: 38926-45-3; Pyridine-2,3,5,6-Tetraamine

上下游产品

3,5-Bis-Phenylazo-Pyridine-2,6-Diamine 34981-09-4

2,6-二氨基-3,5-二硝基吡啶置于5%-Palladium/activated Carbon,甲酸铵体系中,用 乙醇 用作溶剂,20.0~45.0 °C,101.33 Kpa 条件下,以94.6%的收率获得2,3,5,6-吡啶四胺
参考文献:2,3,5,6-四氨基吡啶的制备方法
标题:2,3,5,6-四氨基吡啶的制备方法
摘要:本发明公开了一种2,3,5,6‑四氨基吡啶的制备方法.本发明以2,6‑二氨基‑3,5‑二硝基吡啶为原料,以无水甲酸铵为还原剂,在催化剂pd/c的存在下进行还原反应,从而可在常压下获得2,3,5,6‑四氨基吡啶.用本发明制备方法得到的2,3,5,6-四氨基吡啶,纯度达到99%以上,产率为85‑95%.本发明与现有技术相比较,反应在常压下进行,避免了采用高压釜催化加氢还原存在的不安全因素,反应过程条件温和,操作安全简便,得到的产品纯度高,适于工业化生产.

专利信息

专利号:US-8084569-B2
优先权日:2006-12-21
标 题 :Process for the synthesis of diaminopyridines from glutarimidines
发明人：MINTER AARON; STOKES BERLIN
权利人:MINTER AARON; STOKES BERLIN; DU PONT
摘要:A liquid-phase process is provided for the synthesis from glutarimidines of diaminopyridines and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.

专利号:US-8022167-B2
优先权日:2006-12-21
标 题 :Process for the synthesis of diaminopyridines from glutaronitriles
发明人：MINTER AARON; STOKES BERLIN
权利人:MINTER AARON; STOKES BERLIN
摘要:A liquid-phase process is provided for the manufacture from glutaronitriles and related compounds of 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.

专利号:US-8115007-B2
优先权日:2007-11-27
标题:Synthesis of diaminodinitropyridine
发明人：DINDI HASAN; SCHULTZ JAMES ARNOLD
权利人:DINDI HASAN; SCHULTZ JAMES ARNOLD; DU PONT
摘要:A process for the preparation of diaminodinitropyridine or diaminodinitrobenzene by contacting an aminopyridine or aminobenzene with oleum and nitric acid, wherein the improvement comprises adding at least about 1% molar excess of nitric acid, based upon the aminopyridine or aminobenzene with stirring for at least two hours to form first the intermediate sulfonic acid, and then diaminodinitropyridine or diaminodinitrobenzene, and use of such products in the preparation of rigid rod polymers is disclosed.

专利号:US-2010029948-A1
优先权日:2006-12-21
标 题 :Process for the synthesis of diaminopyridines from glutaronitriles

专利号:WO-2008082509-A2
优先权日:2006-12-21
标题:Process for the synthesis of diaminopyridines from glutaronitriles

专利号:US-2009137814-A1
优先权日:2007-11-27
标 题 :Synthesis of diaminodinitropyridine