CAS: 106-65-0; Dimethyl Succinate

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CAS号23055-10-9 马来酸二甲酯 | CAS号762-42-5 丁炔二酸二甲酯 | CAS号67-56-1 甲醇 | CAS号110-15-6 琥珀酸； 丁二酸 | CAS号108-30-5 丁二酸酐 | CAS号1634-04-4 甲基叔丁基醚 | CAS号624-48-6 顺丁烯二甲酸二甲酯 | CAS号54509-73-8 ethene | CAS号201230-82-2 carbon monoxide | CAS号624-49-7 富马酸二甲酯 | CAS号1099378-22-9 4-羟基-6,8-二甲氧基-2... | CAS号105544-78-3 4-methoxy-4-oxo... | CAS号4146-43-4 丁二酸二酰肼 | CAS号773-14-8 八氟代四氢呋喃 | CAS号354-34-7 三氟乙酰氟 | CAS号422-61-7 五氟丙酰氟 | CAS号335-42-2 perfluorobutyry... | CAS号5653-88-3 2-(苯基亚甲基)丁二酸 | CAS号3878-55-5 丁二酸单甲酯 | CAS号108-30-5 丁二酸酐

1,4-Dimethyl But-2-Enedioate置于氢气体系中,用 水,乙腈 用作溶剂,20.0 °C,101.33 Kpa 条件下,反应 2.0H,以98%的收率获得丁二酸二甲酯
参考文献:分散在固体载体上的钯纳米颗粒:在水性介质中烯烃选择性加氢的合成,表征和催化活性
标题:分散在固体载体上的钯纳米颗粒:在水性介质中烯烃选择性加氢的合成,表征和催化活性
摘要:使用硅胶和多孔聚合物珠粒作为固体载体,制备了两种粒径为2-4 Nm的pd纳米颗粒催化剂.将2-吡啶甲醛配体固定在可商购的3-氨基丙基官能化硅胶上,然后进行pd金属分散.珠状交联聚(4-乙烯基吡啶-共苯乙烯)凝胶是通过在过硫酸铵存在下将4-乙烯基吡啶,苯乙烯和二乙烯基苯进行无乳化剂乳液聚合而制备的,然后将pd金属分散在合成的聚合物上.通过sem,Tem和icp技术分别对这些催化剂的外观,尺寸和可能的浸出进行了表征.此外,这些催化剂的反应性在各种α的氢化作用下进行了测试,在氢气球(1个大气压)下,使用水性溶剂使用β-不饱和羰基化合物.结果表明,分散在二氧化硅上的钯是比分散在聚合物上的钯更有效的催化剂,前者可以循环使用10次以上,而活性没有明显损失.版权所有©2010 John Wiley&sons,Ltd.
Doi:10.1002/aoc.1679

专利信息

专利号:WO-2009018504-A1
优先权日:2007-08-01
标题 :Process for the synthesis of diaminopyridine and related compounds
发明人：RITTER JOACHIM C
权利人:DU PONT; RITTER JOACHIM C
摘要:A process is provided for the synthesis of a diaminopyridine, such as 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a chlorine-ammonia displacement in the presence of a copper source.

专利号:US-RE37449-E
优先权日:1987-02-06
标题:Process of synthesis of 3′,4′-anhydrovinblastine, vinblastine and vincristine
发明人：KUTNEY JAMES P; CHOI LEWIS S L; NAKANO JUN; TSUKAMOTO HIROKI; BOULET CAMILLE A; MCHUGH MICHAEL
权利人:UNIV BRITISH COLUMBIA
摘要:The present invention relates to the synthesis of dimer alkaloid compounds, particularly those of the Catharantus (Vinca) family, from an indole unit, such as cantharanthine, and a dihydroindole unit, such as vindoline. A multi-step process is disclosed including the steps of (1) of 1,4-reduction of a first dimeric iminium intermediate to an enamine compound by reaction with a 1,4-dihydropyridine compound; (2) oxidative transformation of the resulting enamine to a second iminium intermediate under controlled aeration; (3) reduction of the second iminium intermediate to form the target dimer alkaloid compounds. The entire process can be conducted in a one-pot operation to obtain the target compounds without isolation of the intermediates.

专利号:US-5047528-A
优先权日:1987-01-22
标题 :Process of synthesis of vinblastine and vincristine
发明人：KUTNEY JAMES P; CHOI LEWIS S L; NAKANO JUN; TSUKAMOTO HIROKI; BOULET CAMILLE A; MCHUGH MICHAEL
权利人:UNIV BRISTISH COLUMBIA
摘要:The present invention relates to the synthesis of dimer alkaloid compounds, particularly those of the Catharantus (Vinca) family, from an indole unit, such as cantharanthine, and a dihydroindole unit, such as vindoline. A multi-step process is disclosed including the steps of (1) of 1,4-reduction of a first dimeric iminium intermediate to an enamine compound by reaction with a 1,4-dihydropyridine compound; (2) oxidative transformation of the resulting enamine to a second iminium intermediate under controlled aeration; (3) reduction of the second iminium intermediate to form the target dimer alkaloid compounds. The entire process can be conducted in a one-pot operation to obtain the target compounds without isolation of the intermediates.

专利号:US-11745159-B2
优先权日:2017-10-20
标题:Heated nanowells for polynucleotide synthesis
发明人：MARSH EUGENE P; INDERMUHLE PIERRE F; PECK BILL JAMES
权利人:TWIST BIOSCIENCE CORP
摘要:Defined sequence RNA synthesis by 3′→5′ direction is now well established and currently in use for synthesis and development of vast variety of therapeutic grade RNA and Si RNA etc. A number of such synthetic RNA requires a modification or labeling of 3′-end of an oligonucleotide. The synthesis of 3′-end modified RNA requiring lipophilic, long chain ligands or chromophores, using 3′→5′ synthesis methodology is challenging, requires corresponding solid support and generally results in low coupling efficiency and lower purity of the final oligonucleotide in general because of large amount of truncated sequences containing desired hydrophobic modification. We have approached this problem by developing reverse RNA monomer phosphoramidites for RNA synthesis in 5′→3′-direction. They lead to very clean oligonucleotide synthesis allowing for introduction of various modifications at the 3′-end.

专利号:US-11629223-B2
优先权日:2018-01-11
标 题:Synthesis of polymers from cyclic diolides
发明人：CHEN EUGENE Y; TANG XIAOYAN
权利人:UNIV COLORADO STATE RES FOUND
摘要:Biodegradable polymers with advantageous physical and chemical properties are described, as well as methods for making such polymers. In one embodiment, a new chemical synthesis route to technologically important biodegradable poly(3-hydroxybutyrate) (P3HB) with high isotacticity and molecular weight required for a practical use is described. The new route can utilize racemic eight-membered cyclic diolide (rac-DL), meso-DL, or a rac-DL and meso-DL mixture, derived from bio-sourced dimethyl succinate, and enantiomeric (R,R)-DL and (S,S)-DL, optically resolved by metal-based catalysts. With a stereoselective racemic molecular catalyst, the ROP of rac-DL under ambient conditions produces rapidly P3HB with essentially perfect isotacticity ([mm]>99%), high crystallinity and melting temperature (T m =171° C.), as well as high molecular weight and low dispersity (M n =1.54×10 5 g/mol, Ã?=1.01).

专利号:US-2010055750-A1
优先权日:2008-09-03
标 题:Polyester synthesis
发明人：WOSNICK JORDAN H
权利人:XEROX CORP
摘要:The present disclosure provides for enzymatic polymerization to produce polyester resins suitable for use in manufacturing toners. In embodiments, crystalline copolymers, which are polyesters, may be synthesized from lactones, cyclic anhydrides, cyclic carbonates, and combinations thereof. These crystalline copolymers, in turn, may be utilized in the synthesis of toner particles.