CAS: 5402-20-0; 4-Pyridinesulfonic Acid

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CAS号4556-23-4 4-巯基吡啶 | CAS号2645-22-9 4,4'-二吡啶基二硫 | CAS号5421-92-1 4-吡啶基吡啶氯盐酸盐 | CAS号626-61-9 4-氯吡啶 | CAS号1124-33-0 4-硝基吡啶-N-氧化物 | CAS号7732-18-5 水 | CAS号7722-84-1 过氧化氢 | CAS号64-19-7 冰醋酸 | CAS号108-96-3 吡啶酮 | CAS号626-61-9 4-氯吡啶 | CAS号3881-38-7 1-(4-Pyridyl)-4...

📜4-氯吡啶置于sodium Sulphite-Heptahydrate,5%-Palladium/activated Carbon,双氧水体系中,用 水 作为反应溶剂,85.0~120.0 °C,500.01 Kpa 条件下,反应 20.0H,反应生成 吡啶-4-磺酸
参考文献:一种4-吡啶磺酸的绿色合成方法
标题:一种4-吡啶磺酸的绿色合成方法
摘要:本发明公开了一种4‑吡啶磺酸的绿色合成方法,包括:以4‑氯吡啶为原料,以过氧化氢为氧化剂,以水为反应溶剂,在钛硅分子筛催化作用下,发生氧化反应反应生成4‑氯吡啶氮氧化物;以水为反应溶剂,4‑氯吡啶氮氧化物与亚磺酸盐反应得到4‑磺酸盐吡啶氮氧化物;在金属催化剂催化作用下,4‑磺酸盐吡啶氮氧化物与氢气发生还原反应得到4‑磺酸盐吡啶,反应结束后,调节反应液的ph至中性,过滤,干燥,得到4‑磺酸吡啶.本发明以4‑氯吡啶为起始原料,原料简单易得,且每步反应的产物不需要分离,直接作为下步反应的原料使用,避免大量使用强酸强碱,不会产生大量的废水废渣,基本无污染,符合绿色化学的发展要求.

专利信息

专利号:US-9982072-B2
优先权日:2013-10-30
标 题 :Synthesis of acetal compounds
发明人：LOCCUFIER JOHAN
权利人:AGFA GRAPHICS NV; AGFA NV
摘要:A process for the preparation of optionally asymmetric acetal compounds includes reacting a compound containing a hydroxyl group with a vinylether compound in the presence of a zwitterionic catalyst including at least one basic nitrogen containing structural fragment and at least one sulfonic acid group in its structure, with the proviso that a molar ratio of the basic nitrogen to sulfonic acid is 1:1.

专利号:US-8877935-B2
优先权日:2010-06-08
标 题:One-pot process for the synthesis of dalfampridine
发明人：GARAVAGLIA FABIO; BAROZZA ALESSANDRO; ROLETTO JACOPO; PAISSONI PAOLO
权利人:GARAVAGLIA FABIO; BAROZZA ALESSANDRO; ROLETTO JACOPO; PAISSONI PAOLO; PROCOS SPA
摘要:A process for the preparation of Dalfampridine (1), 4-aminopyridine, starting from 4-pyridinecarbonitrile using a one-pot procedure. n n n n n n n n n n Said process is carried out with no need for isolating intermediates and is particularly advantageous as far as environment, yields, productivity and purity of the resulting product are concerned, both in the reaction mixture and in the isolated crystal.

专利号:US-2012203031-A1
优先权日:2009-10-19
标 题:Sustainable chemical process for reduction of nitro compounds (R-NO2) or nitroso compounds (R-NO) containing sulphonic or carboxylic group into corresponding amino compounds (R-NH2) with inherent recycle of all acidic streams generated in synthesis
发明人：PADIA BHADRESH K; MEHTA NITESH H
权利人:PADIA BHADRESH K; MEHTA NITESH H; NEWREKA CHEMICALS PRIVATE LTD
摘要:The process of the present invention creates a sustainable and closed water loop allowing inherent recycles of all liquid streams generated in the process. The liquid streams generated during the process of the invention are inherently recycled completely, making the process of the present invention a zero liquid discharge process which is environmentally friendly and sustainable. This invention further relates to a sustainable chemical process of reduction of R—NO 2 or R—NO into corresponding R—NH 2 that produces environmentally friendly R—NH 2 in good yields and selectivity with large of mother liquor recycle. The process has a wide scope in that it can be applied to a number of molecules.

专利号:CA-2920044-A1
优先权日:2013-10-30
标 题:Synthesis of acetal compounds using zwitterionic catalysts

专利号:US-2011319628-A1
优先权日:2010-06-08
标题 :One-pot process for the synthesis of dalfampridine

专利号:AU-2014344034-B2
优先权日:2013-10-30
标题 :Synthesis of acetal compounds using zwitterionic catalysts