📜4,6-二氯-5-硝基嘧啶置于苯基二氯化磷体系中,用 Various Solvent(S) 用作溶剂,化学反应 5.0H,以82%的收率获得4,5,6-三氯嘧啶 参考文献:A Simple Direct Procedure For The Regiospecific Preparation Of Chloro Aromatic Compounds 标题:A Simple Direct Procedure For The Regiospecific Preparation Of Chloro Aromatic Compounds 摘要: Doi:10.1021/jo00247A042
专利信息
专利号:US-4500321-A 优先权日:1980-06-04 标 题:Process for the preparation of concentrated fluid dye compositions 发明人:HUGELSHOFER PAUL; BRUTTEL BEAT; PFENNINGER HEINZ; LACROIX ROGER 权利人:CIBA GEIGY CORP 摘要:A process for the preparation of storage-stable concentrated fluid dye compositions of water-soluble dyes, wherein an aqueous solution or suspension of at least one anionic crude dye is passed over a semi-permeable membrane containing ionic groups and having a pore diameter of 1 to 500 ANGSTROM , to remove salts and synthesis by-products of molecular weights less than 500 and to partially remove water, optionally dried, and mixed with a water-miscible organic solvent and, if desired, further additives, before and/or after passage over the semi-permeable membrane. The fluid dye compositions obtained are particularly suitable for use in spray solutions for dyeing leather, as well as for the dying and printing of textile materials, in particular cellulosic fibres.
专利号:CN-116693461-A 优先权日:2023-06-28 标 题:A new synthesis method of 4,6-dichloro-5-methoxypyrimidine
参考文献:10.1007/bf00480435 摘要:Feshin VP, Giller SA, Avota LY, Voronkov MG. Study of chloro derivatives of pyridazine and the products of silylation of pyridazine and 6-pyridazone derivatives by cl35 nuclear quadrupole resonance. Chemistry of Heterocyclic Compounds. 1976 Apr;12(4):440–3. doi: 10.1007/bf00480435.