CAS: 542-10-9; 1,1-Ethanediol Diacetate

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📜Biacetyl Mono-Oxime Acetate 反应生成 乙烯二乙酯
参考文献:α-氧代肟的光化学.第7部分.某些α-氧肟肟酯的光解
标题:α-氧代肟的光化学.第7部分.某些α-氧肟肟酯的光解
摘要:研究了六种α-肟基肟酯在苯中的光化学性质.各种产物的光形成已通过最初的n-o裂解进行了解释,然后将所得的α-氧代亚胺基和酰氧基基团进行β断裂,从而反应生成了腈和酰基基团,以及二氧化碳和烷基基团,分别.esr通过自旋俘获技术证明了酰基和烷基的存在.各种α-氧代肟肟酯(例如3-Acetamiimbutan-2-One(1A)的3-Acetamidobutan-2-One(14))光解后形成的仲酰胺的结构表明n-酰基α-氧代亚胺(37),然后将其进一步光转化.在3-乙酰氧基亚氨基opentan-2-One(1B)的光解中形成4-氧戊丹腈(19)的方法是通过被激发的羰基羰基[1 S(n-π *)引起的分子内最初的γ-氢提取.],然后形成环丁醇和随后的热反应.3-乙酰氧基亚氨基丁-2-酮(1A)在200°上热解导致迅速转化为主要是乙腈(4)和乙酸(5).
DOI:10.1039/p29790001653

专利信息

专利号:US-5117046-A
优先权日:1975-06-30
标题 :Preparation of alkylidene diesters
发明人：PAULIK FRANK E; SCHULTZ ROBERT G
权利人:MONSANTO CO
摘要:Alkylidene diesters such as ethylidene diacetate are produced by reacting an ether and/or an ester under substantially anhydrous conditions with carbon monoxide and hydrogen in contact with a catalyst system comprising a rhodium compound and a halogen component at a temperature in the range from 125° to 300° C. and at a carbon monoxide partial pressure in the range from about 1.0 to 1100 kg/cm 2 . When ethylidene diacetate is the product, it can then be decomposed to produce vinyl acetate and acetic acid by well-known techniques. Since one mole of acetic acid is also produced in the synthesis of the diacetate, the invention makes possible an overall process for the production of vinyl acetate which produces acetic acid rather than consumes it.

专利号:US-4810821-A
优先权日:1981-10-09
标 题:Preparation of alkylidene diesters
发明人：PAULIK FRANK E; SCHULTZ ROBERT G
权利人:MONSANTO CO
摘要:Alkylidene diesters such as ethylidene diacetate are selectively produced in high yields by reacting an ether and/or an ester under substantially anhydrous conditions with carbon monoxide and hydrogen in contact with a catalyst system comprising a rhodium compound, a halogen component, a palladium cocatalyst and a promoter component which is an agent for liberation of carboxylic acid anions. The process is carried out in the liquid phase in a solvent comprising a carboxylic acid at a temperature in the range of 150 DEG to 190 DEG C. and at a carbon monoxide partial pressure in the range from about 1.0 to 1100 kg/cm2 and a carbon monoxide/hydrogen mole ratio of 6:1 to 1:2 for the ester reaction and 10:1 to 1:2 for the ether reaction. When ethylidene diacetate is the product, it can then be decomposed to produce vinyl acetate and acetic acid by well-known techniques. Since one mole of acetic acid is also produced in the synthesis of the diacetate, the invention makes possible an overall process for the production of vinyl acetate which produces acetic acid rather than consumes it.

专利号:US-9469591-B2
优先权日:2012-12-21
标题:Integrated process for the production of methanol and methyl acetate
发明人：BRISTOW TIMOTHY CRISPIN
权利人:BP CHEM INT LTD
摘要:Integrated process for the production of methyl acetate and methanol. The process is carried out by carbonylating dimethyl ether with synthesis gas, recovering methyl acetate and unreacted synthesis gas and supplying unreacted synthesis gas and fresh synthesis gas for methanol synthesis.

专利号:US-9546120-B2
优先权日:2012-12-21
标题 :Integrated process for the production of methanol and methyl acetate
发明人：BRISTOW TIMOTHY CRISPIN
权利人:BP CHEM INT LTD
摘要:Integrated process for the production of methyl acetate and methanol by carbonylating dimethyl ether with synthesis gas, recovering a methyl acetate stream and an unreached synthesis gas stream containing methyl acetate, and scrubbing the synthesis gas to remove methyl acetate. The scrubbed synthesis gas is passed for methanol synthesis.

专利号:US-5502243-A
优先权日:1992-04-15
标题:Hydrocarbonylation of dimethyl ether
发明人：WALLER FRANCIS J; STUDER DAVID W
权利人:AIR PROD & CHEM
摘要:Oxygenated acetyl compounds ethylidene diacetate, acetic acid, acetic anhydride, acetaldehyde, and methyl acetate are produced directly from synthesis gas and dimethyl ether in a catalyzed liquid phase reaction system. The inclusion of carbon dioxide in the synthesis gas in selected amounts increases the overall yield of oxygenated acetyl compounds from the reactant dimethyl ether. When methanol is included in the reactor feed, the addition of carbon dioxide significantly improves the molar selectivity to ethylidene diacetate.

专利号:EP-0891224-B1
优先权日:1996-04-01
标 题:A method of preparing a vinyl acetate catalyst employing an alkali metal borate
发明人：NICOLAU IOAN; COLLING PHILIP M
权利人:HOECHST CELANESE CORP
摘要:A method for preparing an unsaturated ester synthesis catalyst wherein a catalytic carrier is impregnated with a water-soluble palladium salt and a water-soluble gold compound followed by precipitating the water-soluble palladium salt and the water-soluble gold compound to water-insoluble palladium and gold compounds with a fixing composition containing an alkali metal borate. The fixed palladium and gold compounds are reduced to palladium and gold metal with ethylene or hydrazine followed by impregnating the carrier with an alkali metal acetate such as potassium acetate. The unsaturated ester synthesis catalyst can be employed to synthesize vinyl acetate with reduced heavy ends.