CAS: 2050-60-4; Dibutyl Oxalate

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CAS号144-62-7 草酸 | CAS号71-36-3 正丁醇 | CAS号201230-82-2 carbon monoxide | CAS号2372-45-4 正丁醇钠 | CAS号109-65-9 正溴丁烷 | CAS号95-92-1 草酸二乙酯 | CAS号298-12-4 乙醛酸 | CAS号79-37-8 草酰氯 | CAS号3007-95-2 1-Naphthaleneca... | CAS号27942-64-9 4-氯苯甲酸丁酯 | CAS号136-60-7 苯甲酸丁酯 | CAS号532-34-3 避虫酮 | CAS号615-35-0 N,N'-二甲基草酰胺 | CAS号122-43-0 苯乙酸丁酯 | CAS号15804-19-0 2,3-二羟基喹喔啉 | CAS号106675-70-1 N,N'-二甲氧基-N,N'-... | CAS号135-98-8 仲丁基苯 | CAS号1871-89-2 N,N'-双(2-羟乙基)草酰胺

氯丁烷,Sodium Oxalate 以 N,N-二甲基甲酰胺 用作溶剂,化学反应 4.0H,以81.7%的收率获得草酸二丁酯
参考文献:一种草酸二丁酯的制备方法
标题:一种草酸二丁酯的制备方法
摘要:本发明公开了一种草酸二丁酯的制备方法,涉及有机合成技术领域.本发明包括在n,N‑二甲基甲酰胺溶剂中,以氯代正丁烷,草酸盐为原料,在一定温度和反应时间下反应,制得草酸二丁酯粗品,通过水洗,减压蒸馏,干燥得到产品草酸二丁酯;选定n,N‑二甲基甲酰胺用作溶剂,详细研究草酸盐和氯代正丁烷反应的各种影响因素;其中氯代正丁烷:草酸盐物质的量比=2.0:1~2.2:1,反应时间2~4H,反应温度40~60°C,产品收率68.7~81.7%.本发明的制备方法加热温度低,即发生反应,可以降低草酸二丁酯生产能耗;该制备方法无需使用大量的酸或辅助试剂,可以降低生产成本,更加绿色环保.

专利信息

专利号:US-10266467-B2
优先权日:2017-08-02
标 题:Synthesis of glycols via transfer hydrogenation of alpha-functional esters with alcohols
发明人：CHAKRABORTY SUMIT; HEMBRE ROBERT THOMAS
权利人:EASTMAN CHEM CO
摘要:A transfer hydrogenation process for forming vicinal diols by hydrogenating 1,2-dioxygenated organic compounds using alcohols as the reducing agent instead of the traditional H 2 gas. The transfer hydrogenation is carried out under milder conditions of temperature and pressure than is typical for ester hydrogenation with H 2 . The milder conditions of operation provide benefits, such as lower operating and capital costs for industrial scale production as well as savings in product purification due to the avoidance of by-products from exposure of reaction mixtures and products to high temperatures.

专利号:US-10975096-B2
优先权日:2014-06-20
标题 :Synthesis of polycyclic-carbamoylpyridone compounds
发明人：CHIU ANNA; ENQUIST JR JOHN; GRIGGS NOLAN; HALE CHRISTOPHER; IKEMOTO NORIHIRO; KEATON KATIE ANN; KRAFT MATT; LAZERWITH SCOTT E; LEEMAN MICHEL; PENG ZHIHUI; SCHRIER KATE; TRINIDAD JONATHAN; VAN HERPT JOCHEM; WALTMAN ANDREW W
权利人:GILEAD SCIENCES INC
摘要:Methods of making compounds of Formula I are disclosed:

专利号:US-4663477-A
优先权日:1986-03-27
标题:Process for the hydrolysis of dialkyl carbonates
发明人：CRANDALL JOHN W; DEITZLER JAMES E; KAPICAK LOUIS A; POPPELSDORF FEDOR
权利人:UNION CARBIDE CORP
摘要:A process is provided for the utilization of dialkyl carbonates formed as by-products in a continuous process for the synthesis of oxalic acid esters from nitrous acid esters and carbon monoxide and wherein the esters are subsequently used as intermediates in the production of commercially useful products, such as ethylene glycol. The process comprises contacting a mixture containing the by-product comprised of a dialkyl carbonate with an aqueous solution of a metal carbonate under hydrolyzing conditions whereby the dialkyl carbonate is converted to the corresponding alkanol and the metal carbonate is converted to metal bicarbonate. Upon distillation of the alkanol from the mixture the bicarbonate is converted back to the metal carbonate which can then be recycled from the bottoms to the hydrolyzing zone for use in further hydrolysis of by-product. The alkanol is recycled for use in the continuous process.

专利号:US-4005131-A
优先权日:1976-01-02
标 题 :Synthesis of oxalate esters from carbon monoxide and acetals or ketals
发明人：ZEHNER LEE R
权利人:ATLANTIC RICHFIELD CO
摘要:A process for the preparation of oxalate esters by the catalytic oxidative carbonylation of acetals and ketals with carbon monoxide and oxygen-containing gas in the presence of a metal salt catalyst, an amine base and a catalytic amount of an alcohol. Preferably a catalytic amount of particular metal oxidizing salts is employed along with a catalytic amount of an acid or an amine salt compound. Alternatively various counterions and ligands of the metal salt catalysts may be employed.

专利号:US-4041068-A
优先权日:1976-06-29
标题:Synthesis of oxalate esters by catalytic oxidative carbonylation of borate esters
发明人：ZEHNER LEE R; ZAJACEK JOHN G
权利人:ATLANTIC RICHFIELD CO
摘要:A process for the preparation of oxalate esters by the catalytic oxidative carbonylation of orthoborate, metaborate and polyborate esters or mixtures thereof with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a metal salt catalyst, an amine base and at least a catalytic amount of an alcohol. Preferably a catalytic amount of particular metal oxidizing salts are employed along with a catalytic amount of an amine salt compound which may be formed in situ by the addition of an acid. Alternatively various counterions and ligands of the metal salt catalysts may be employed.

专利号:US-6512086-B2
优先权日:2000-07-25
标 题 :Process for preparation of organosilicon compositions
发明人：GRECO ALBERTO; AUSILIO ANTONIO; POZZI ENRICO
权利人:MAPEI SPA
摘要:Process for the preparation of fluid organosilicon compounds usable in adhesive, coating and sealant formulations is described. The process includes the synthesis of organosilicon prepolymer compositions starting from unsaturated polyurethanes obtained in turn from unsaturated monoalcohol polyethers and diisocyanates with a controlled NCO/OH ratio, to which chlorosilanes are added in the presence of methyl or ethyl orthoformates. These organosilicon compositions are able to cross-link through silicon-alkoxy end groups of the type: