CAS: 623-36-9; 2-Methylpent-2-Enal

相似化合物

3142-72-1 1576-87-0 107-86-8

上下游产品

CAS号76966-26-2 dimethyl-2,3 tr... | CAS号76966-17-1 methyl-3 trimet... | CAS号565-61-7 3-甲基-2-戊酮 | CAS号143361-03-9 4-methylnon-3-e... | CAS号71-23-8 正丙醇 | CAS号105-30-6 2-甲基-1-戊醇 | CAS号3142-72-1 2-甲基-2-戊烯酸 | CAS号123-15-9 2-甲基戊醛 | CAS号32749-94-3 2,3-二甲基戊醛

📜丙醛置于ce0.25Zr0.75O2体系中,400.0 °C,101.33 Kpa 条件下,反应 0.25H,以23.3%的收率获得产物2-甲基-2-戊烯醛
参考文献:丙醛在ce X Zr 1-X O 2混合氧化物催化剂上的缩合反应
标题:丙醛在ce X Zr 1-X O 2混合氧化物催化剂上的缩合反应
摘要:研究了丙醛在ce X Zr 1-X O 2混合氧化物上的汽相缩合反应,该反应是一种模型反应,可以从生物油混合物中发现的短醛生产汽油范围分子.研究了几个操作参数.这些包括所用载气的类型(h 2或he)以及进料中酸和水的掺入.丙烷在ce X Zr 1− X O 2上转化为高级碳链含氧化合物通过两个途径,醛醇缩合和酮化.这些缩合反应的主要产物包括3-戊酮,2-甲基-2-戊烯醛,2-甲基戊醛,3-庚酮和4-甲基-3-庚酮.提出酮化路径的主要中间体是表面羧酸盐.进料中酸的存在通过竞争性吸附抑制醛缩反应,从而抑制了醛醇缩合途径.水还通过增加表面羟基的浓度来促进酮化作用并抑制羟醛缩合,从而增强了醛与表面羧酸盐的形成.氢促进轻质含氧化合物和碳氢化合物的裂解和产生.轻质的含氧化合物又可以重新结合到反应路径中,从而产生副产物.然而,碳氢化合物不会进一步反应.通过xps对新鲜催化剂和废催化剂的分析表明,在不同
DOI:10.1016/j.Apcata.2010.06.048

专利信息

专利号:US-9834501-B2
优先权日:2016-01-28
标题 :Efficient synthesis of methacroelin and other alpha, beta—unsaturated aldehydes from methanol and an aldehyde
发明人：BOPPANA Venkata Bharat; NORMAN DAVID WILLIAM; TUSTIN GERALD C; STEFFEY MELISSA PAGE
权利人:EASTMAN CHEM CO
摘要:A process is described that uses a silver catalyst to convert methanol into formaldehyde in the presence of less than a stoichiometric amount of oxygen. The resulting formaldehyde is reacted without isolation with propionaldehyde over a commercially available anatase titania catalyst that is shown to be catalytically active towards the formation of methacrolein from formaldehyde and propionaldehyde with conversions and selectivities close to 90%. This titania catalyst is readily available, non-toxic, and can be used with formaldehyde and a variety of other aldehyde compounds to make α,β-unsaturated aldehyde compounds. This process benefits from low raw material costs and is economically advantaged due to the elimination of catalyst separation. This process shows promising stability and selectivity during lifetime studies, particularly when performed in the presence of a hydrogen carrier gas.

专利号:EP-2986376-A1
优先权日:2013-04-19
标题:Immobilized catalytically active composition for hydroformylation of olefin-containing mixtures
发明人：DYBALLA KATRIN MARIE; FRANKE ROBERT; HAHN HANNA; BECKER MARC; SCHÖNWEIZ ANDREAS; DEBUSCHEWITZ JONAS; WALTER SIMON; WÖLFEL RENÉ; HAUMANN MARCO; WASSERSCHEID PETER; KAFTAN ANDRE; LAURIN MATHIAS; LIBUDA JÖRG
权利人:EVONIK DEGUSSA GMBH
摘要:The present invention provides a composition, and for the use of this composition as a catalytically active composition in processes for synthesis of chemical compounds, especially for hydroformylation of olefinically unsaturated hydrocarbon mixtures. Preferably, the composition comprises a metal complex, especially an Rh complex having a phosphine or phosphite ligand, on an inert porous carrier, and is loaded for the purposes of the hydroformylation with the aldol by-product of the desired aldehyde, in the manner of an application of the 'Supported Liquid Phase' (SLP) concept.

专利号:US-8236976-B2
优先权日:2004-03-09
标 题 :Processes for highly enantio- and diastereoselective synthesis of acyclic epoxy alcohols and allylic epoxy alcohols
发明人：WALSH PATRICK; LURAIN ALICE E; KELLY ANN R; MAESTRI AARON G
权利人:WALSH PATRICK; LURAIN ALICE E; KELLY ANN R; MAESTRI AARON G; UNIV PENNSYLVANIA
摘要:The inventive subject matter relates to novel processes for making an epoxy alcohol from an aldehyde, comprising the steps of: (a) adding (i) an organozinc compound or (ii) divinylzinc compound and an diorganozinc compound to said aldehyde in the presence of a first catalyst to form an allylic alkoxide compound; and (b) epoxidizing said allylic alkoxide compound in the presence of an oxidant and a second catalyst.

专利号:US-2016068459-A1
优先权日:2013-04-19
标题 :Immobilized catalytically active composition for hydroformylation of olefin-containing mixtures
发明人：DYBALLA KATRIN MARIE; FRANKE ROBERT; HAHN HANNA; BECKER MARC; SCHOENWEIZ ANDREAS; DEBUSCHEWITZ JONAS; WALTER SIMON; WOELFEL RENE; HAUMANN MARCO; WASSERSCHEID PETER; KAFTAN ANDRE; LAURIN MATHIAS; LIBUDA JOERG
权利人:EVONIK DEGUSSA GMBH
摘要:A composition and the use of said composition as catalytically active composition in processes for synthesis of chemical compounds, especially the hydroformylation of olefinically unsaturated hydrocarbon mixtures.

专利号:US-8309742-B2
优先权日:2007-05-09
标题 :Use of the PigD protein for catalyzing 1,4-additions of 2-oxoalkanoates to α, β-unsaturated ketones
发明人：MUELLER MICHAEL; DRESEN CAROLA; RICHTER MICHAEL
权利人:MUELLER MICHAEL; DRESEN CAROLA; RICHTER MICHAEL; UNIV ALBERT LUDWIGS FREIBURG
摘要:The present invention relates to the preparation of compounds of the general formula II which can be obtained by 1,4 addition of 2-oxoalkanoates or 2-oxocarboxylic acids onto the appropriate ketones. The present invention also relates to the use of the PigD protein for catalysis of 1,4 additions of 2-oxoalkanoates/-carboxylic acids, for example pyruvate/pyruvic acid or 2-oxobutyrate/2-oxobutyric acid, onto aliphatic, aromatic and heterocyclic α,β-unsaturated ketones. The 1,4 additions are effected here with CO2 elimination. The use of the PigD protein as a catalyst in the aforementioned 1,4 additions enables the synthesis of addition products with stereoactive centers these addition products being preparable with an enantiomeric excess of more than 80% ee. The aliphatic, aromatic and heterocyclic α,β-unsaturated ketones which are suitable for the process are represented by the general formula I:

专利号:US-6448409-B1
优先权日:1999-11-12
标 题 :Method for the synthesis of chiral allylic alcohols utilizing selone based chiral derivatizing agents
发明人：SILKS III LOUIS A
权利人:UNIV CALIFORNIA
摘要:Molecules containing a chiral 1,2-diol unit are synthesized from reactions between aldehydes and N-acyl selones. A chilled N-acyl selone is reacted with a Lewis acid such as TiCl 4 and mixed with a tertiary amine such as diisopropylethylamine to generate an enolate solution. Upon further chilling of the enolate solution a desired aldehyde is added and after an acceptable reaction period a quencher is introduced and the product isolated.