CAS: 78-85-3; Methacrolein

上下游产品

CAS号115-11-7 2-甲基丙烯 | CAS号187737-37-7 propene | CAS号201230-82-2 carbon monoxide | CAS号50-00-0 甲醛 | CAS号123-38-6 丙醛 | CAS号54509-73-8 ethene | CAS号67-64-1 丙酮 | CAS号75-65-0 叔丁醇 | CAS号75-28-5 异丁烷 | CAS号79-41-4 甲基丙烯酸 | CAS号10476-95-6 甲丙烯醛二乙酰基缩醛 | CAS号40702-26-9 1,3,4-三甲基-3-环己烯-1-羧醛 | CAS号34265-58-2 5-甲基水杨酸乙酯 | CAS号585-07-9 甲基丙烯酸叔丁酯 | CAS号35000-15-8 双(2-甲基烯丙基)胺 | CAS号933-44-8 1,4-dimethylcyc... | CAS号142457-17-8 1,3-dimethylcyc... | CAS号56956-63-9 1α,4,5β-trimeth... | CAS号141340-23-0 2,3,5-trimethyl... | CAS号920-46-7 甲基丙烯酰氯

叔丁醇置于氧气体系中,用 水 作为反应溶剂,350.0 °C,100.0 Kpa 条件下,以91.1%的收率获得产物2-甲基丙烯醛
参考文献:生产甲基丙烯醛方法
标题:生产甲基丙烯醛方法
摘要:本发明涉及一种由异丁烯或叔丁醇氧化制甲基丙烯醛的方法,主要解决现有技术中甲基丙烯醛收率不高和重现性不好的问题.本发明通过采用以选自sio2或al2O3中的至少一种为载体并含有由下列通式的活性组分mo12Biafebcoccedxeyfzgox,其中x为选自w,V,Ni,Cr,Mn,Nb或re中的至少一种;y为选自sn,Sr,Zn,Ti或zr中的至少一种;z为选自k,Rb,Na,Li,Tl或cs中的至少一种的技术方案较好地解决了该问题,可用于甲基丙烯醛的工业生产中.

专利信息

专利号:US-6794534-B2
优先权日:2000-06-23
标题:Synthesis of functionalized and unfunctionalized olefins via cross and ring-closing metathesis
发明人：GRUBBS ROBERT H; CHATTERJEE ARNAB K; MORGAN JOHN P; SCHOLL MATTHIAS; CHOI TAE-LIM
权利人:CALIFORNIA INST OF TECHN
摘要:The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, the invention relates to the synthesis of α-functionalized or unfunctionalized olefins via intermolecular cross-metathesis and intramolecular ring-closing metathesis using a ruthenium alkylidene complex. The catalysts preferably used in the invention are of the general formula n wherein: n M is ruthenium or osmium; n X and X 1 are each independently an anionic ligand; n L is a neutral electron donor ligand; and, n R, R 1 R 6 , R 7 , R 8 , and R 9 are each independently hydrogen or a substituent selected from the group consisting of C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, aryl, C 1 -C 20 carboxylate, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 2 -C 20 alkynyloxy, aryloxy, C 2 -C 20 alkoxycarbonyl, C 1 -C 20 alkylthio, C 1 -C 20 alkylsulfonyl and C 1 -C 20 alkylsulfinyl.

专利号:US-2004018598-A1
优先权日:2000-05-30
标题 :Bio-intermediates for use in the chemical synthesis of polyketides
发明人：SANTI DANIEL; ASHLEY GARY; MYLES DAVID C
摘要:The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKSâ€?) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediatesâ€?) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greaty simplified.

专利号:US-7414008-B2
优先权日:2002-02-28
标 题:Catalyst for synthesis of unsaturated aldehyde, production process for said catalyst, and production process for unsaturated aldehyde using said catalyst
发明人：YUNOKI HIROMI
权利人:NIPPON SHOLONBAI CO LTD
摘要:The present invention provides: a production process for a catalyst for synthesis of an unsaturated aldehyde and/or an unsaturated carboxylic acid, which production process is suitable for producing the catalyst with good reproducibility, wherein the catalyst is excellent in activity, selectivity, and physical strength; this catalyst; and a production process for the unsaturated aldehyde and/or the unsaturated carboxylic acid by using this catalyst. The production process for the catalyst comprises the steps of: carrying out heat treatment of an aqueous solution or slurry of a starting material to thus prepare a catalyst precursor P1, wherein the starting material includes molybdenum, bismuth, and iron as essential components; thereafter adding and mixing a binder into the P1 to thus prepare a catalyst precursor P2; and molding and then calcining the P2, thereby producing the catalyst for synthesis of the unsaturated aldehyde and/or the unsaturated carboxylic acid; with the production process being characterized by involving an ignition loss ratio of the catalyst precursor P1 in the range of 10 to 40 mass % (excluding 40 mass %).

专利号:US-4277610-A
优先权日:1975-01-27
标 题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.

专利号:US-4151205-A
优先权日:1975-01-27
标题 :Synthesis of vitamin E
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A synthesis of vitamin E in racemic or optically active forms from methacryolein or beta-hydroxyisobutyric acid including intermediates in this synthesis.

专利号:US-4163021-A
优先权日:1975-01-27
标 题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.