2-氯吡嗪,Sodium Methylate 以 甲醇 用作溶剂,化学反应 2.0H,以92%的收率获得2-甲氧基吡嗪 参考文献:A New Route To Aminodiazines Via Metalation Reaction. Synthesis Of An Aza Analogue Of Nevirapine: Diazines Xv 标题:A New Route To Aminodiazines Via Metalation Reaction. Synthesis Of An Aza Analogue Of Nevirapine: Diazines Xv 摘要:报道了一种合成氨基二嗪的新路线,使用了二嗪的邻位定向锂化,随后与作为电亲体的托烯基叠氮化物反应.对所获得的叠氮或四唑化合物进行了还原,得到了预期的胺.这种方法学使得新氨基二嗪的合成成为可能,并提高了之前描述的各种氨基二嗪的收率.该反应被用于制备 Nevirapine 的氮杂类似物. Doi:10.1055/s-1996-4303
专利号:US-2025034146-A1 优先权日:2023-07-13 标题:Electro-photochemical synthesis of 1,2,4-triazolo-[4,3-a]pyrazine 发明人:PIERCEY DAVIN GLENN; YOUNT JOSEPH ROBERT 权利人:PURDUE RESEARCH FOUNDATION 摘要:A method of preparing a 1,2,4-triazolo-[4,3-a]pyrazine backbone using an electro-photochemical process comprising coupling a compound comprising a 5-substituted tetrazole moiety to a compound comprising an optionally substituted pyrazine moiety electrochemically and subjecting the resulting compound to photochemical excitation with ultraviolet light.
专利号:WO-2013112823-A1 优先权日:2012-01-25 标题 :Heterophase synthesis of metal-coordinated framework materials for particle size control 发明人:AHN DONGCHAN; LEE JEONG YONG 权利人:DOW CORNING 摘要:Various embodiments of the present invention relate to a method of preparing coordination polymer crystals, and to the crystals produced thereby. The method includes providing a composition. The composition includes Component (i), a metal-containing compound that is a source of one or more metal ions; Component (ii), a bridging ligand-containing compound that is a source of one or more bridging ligands; Component (iii), a first liquid in which (i) and (ii) are soluble; and Component (iv), a second liquid immiscible with the first liquid. The method includes mixing the composition to form an emulsion. The method also includes maintaining the emulsion for a time sufficient to produce a crystalline coordination polymer. Various embodiments also provide methods of making membranes and membranes made thereby wherein the membrane-forming composition includes the coordination polymer crystals, including methods of making membranes wherein coordination polymer crystals form in the membrane or in the membrane-forming composition before, during, or after curing of the membrane-forming composition. Various embodiments also provide methods of gas separation using the membranes.
专利号:US-2024335442-A1 优先权日:2021-08-02 标 题:N-acylhydrazone compounds capable of inhibiting nav1.7 and/or nav1.8, processes for the preparation thereof, compositions, uses, methods for treatment using same, and kits 发明人:BARREIRO GABRIELA; SANT'ANA DANILO PEREIRA DE; GAMBA LUIS EDUARDO REINA; FRAGA CARLOS ALBERTO MANSSOUR; BARREIRO ELIEZER JESUS DE LACERDA; LIMA LÃ?DIA MOREIRA 权利人:EUROFARMA LABORATORIOS S A; UNIV FEDERAL DO RIO DE JANEIRO UFRJ 摘要:N-acylhydrazone compounds that are Nav 1.7 and/or Nav 1.8 inhibitors, including N-acylhydrazone compounds of Formula (I), wherein the substituents R1 to R6 are independently selected from the groups defined in the specification, as well as to the processes for the preparation thereof, compositions comprising at least one of said compounds, uses, treatment methods for treating or preventing pain-related pathologies, and kits, and which are applicable in the fields of medicinal chemistry and organic synthesis, as well as in the treatment of pain-related disorders.
专利号:US-6103865-A 优先权日:1998-08-03 标 题 :PH-sensitive polymer containing sulfonamide and its synthesis method 发明人:BAE YOU HAN; PARK SANG YEOB 权利人:KWANGJU INST SCI & TECH 摘要:There are disclosed pH-sensitive polymers containing sulfonamide groups, which can be changed in physical properties, such as swellability and solubility, depending on pH and which can be applied for a drug-delivery system, bio-material, sensor, etc, and a preparation method therefor. The pH-sensitive polymers are prepared by introduction of sulfonamide groups, various in pKa, to hydrophilic groups of polymers either through coupling to the hydrophilic groups, such as acrylamide, N,N-dimethylacrylamide, acrylic acid, N-isopropylacrylamide, etc, of polymers or copolymerization with other polymerizable monomers. These pH-sensitive polymers may have a structure of linear polymer, grafted copolymer, hydrogel or interpenetrating network polymer.
专利号:US-10000598-B2 优先权日:2012-10-15 标题:Methods for preparation of molecularly imprinted polymers for wine extraction 发明人:BELBRUNO JOSEPH J 权利人:DARTMOUTH COLLEGE 摘要:Disclosed herein are compositions of, synthesis methods and methods of use for improved molecularly imprinted polymers useful for extracting target molecule compounds of wine.
专利号:US-6552018-B1 优先权日:1997-01-27 标 题:Pyrazole derivatives 发明人:EJIMA AKIO; OHSUKI SATORU; OHKI HITOSHI; NAITO HIROYUKI 权利人:DAIICHI SEIYAKU CO 摘要:The present invention relates to cis- and trans-forms of pyrazole derivatives, salts thereof, or agents containing the same, and represented by the general formula (I): n wherein G represents a nitrogen containing saturated heterocyclic structure represented by the following formula: n These compounds exhibit anti-tumor activity on 5-FU-resistant tumors and effects on P glycoprotein expressing, multiple-drug resistant tumors. An example of a pyrazole derivative which demonstrates 50% inhibition of tumor cell growth is 3-[4-(3-chloro-5-fluorophenyl)- 1 piperazinyl]-1-[1-(3-chloro-2-pyridyl)-5-methyl-4-pyrazolyl)-1-trans-propene hydrochloride. Synthesis of the compounds represented by formula (I) can be prepared by any one of various routes such as a Mannich reaction, a Wittig reaction, reductive amination or substitution by allylation.
[参考文献]: C Sala, Et Al. Headspace Solid-Phase Microextraction Method For Determining 3-Alkyl-2-Methoxypyrazines In Musts By Means Of Polydimethylsiloxane-Divinylbenzene Fibres. J Chromatogr A. 2000 Jun 2;880(1-2):93-9.
合成参考文献
摘要:A. Albert and J. N. Phillips. J. Chem. Soc. 1956, 1294. 参考文献:10.1021/jf200542w 摘要:Vallarino JG, López-Cortés XA, Dunlevy JD, Boss PK, González-Nilo FD, Moreno YM. Biosynthesis of Methoxypyrazines: Elucidating the Structural/Functional Relationship of Two Vitis viniferaO-Methyltransferases Capable of Catalyzing the Putative Final Step of the Biosynthesis of 3-Alkyl-2-Methoxypyrazine. J. Agric. Food Chem. 2011 Jun 09;59(13):7310–6. doi: 10.1021/jf200542w. 参考文献:10.1007/s11356-022-19738-2 摘要:Lindholm-Lehto PC. Developing a robust and sensitive analytical method to detect off-flavor compounds in fish. Environmental Science and Pollution Research. 2022 Mar 23;29(37):55866–76. doi: 10.1007/s11356-022-19738-2.