CAS: 133-08-4; Diethyl 2-Butylmalonate

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甲撑丙二酸二乙酯置于palladium On Activated Charcoal N-苯基-2-萘胺,氢气体系中,用 乙醚 用作溶剂,化学反应生成正丁基丙二酸二乙酯
参考文献:乙烯基重氮甲烷与不饱和化合物的加成环化
标题:乙烯基重氮甲烷与不饱和化合物的加成环化
摘要:研发了乙烯基重氮甲烷与各种烯烃的加成环化.产品由乙烯基吡唑啉,环丙烷和二烯组成.从丙烯酸甲酯中,也获得了少量的环戊烯基羧酸酯,其形成被解释为是由于乙烯基重氮甲烷的1,5-偶极结构引起的.已经提出了与乙烯基重氮甲烷的加成环化和中间体的分解有关的通用机理,后者涉及碳离子部分上对碳负离子和氢化物的竞争.
Doi:10.1016/0040-4020(67)85126-3

专利信息

专利号:US-11658322-B2
优先权日:2019-11-04
标 题:Membranes and anion conductive polymers
发明人：SWAGER TIMOTHY MANNING; GROSSMAN JEFFREY C; LIN SIBO; KIM YOONSEOB; WANG YANMING; FRANCE-LANORD ARTHUR; WU YOU-CHI; LI YIFAN; WANG YICHONG
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:A major challenge in the development of anion exchange membranes for fuel cells is the design and synthesis of highly stable (chemically and mechanically) and conducting membranes. Membranes that can endure highly alkaline environments while rapidly transporting hydroxides are desired. A design for using cross-linked polymer membranes is disclosed to produce ionic highways along charge delocalized pyrazolium and homoconjugated triptycenes. The ionic highway membranes show improved performance in key parameters. Specifically, a conductivity of 111.6 mS cm −1 at 80° C. was obtained with a low 7.9% water uptake and 0.91 mmol g −1 ion exchange capacity. In contrast to existing materials, these systems have higher conductivities at reduced hydration and ionic exchange capacities, emphasizing the role of the highway. The membranes retain more than 75% of initial conductivity after 30 days of alkaline stability test. This effective water management through ionic highways is confirmed by density functional theory and Monte Carlo studies. A single cell with platinum group metal catalysts at 80° C. showed a high peak density of 0.73 W cm −2 (0.45 W cm −2 from silver-based cathode) and stable performance during 400 h tests.

专利号:US-9896523-B2
优先权日:2015-06-26
标题 :Ziegler-Natta catalyst synthesis and process thereof
发明人：SINGH GURMEET; KUMAR NARESH; KAUR SUKHDEEP; BANTU BHASKER; KAPUR GURPREET SINGH; SHASHIKANT
权利人:INDIAN OIL CORP LTD
摘要:The present invention describes a process of preparing a catalyst for olefin polymerization comprising: (i) treating a magnesium metal with an organohalide along with an internal donor to obtain a reaction mixture having solid component (A); (ii) treating the reaction mixture having solid component (A) with an acyl halide to obtain a reaction mixture having solid component (B); and (iii) treating the reaction mixture having solid component (B) of step (ii) with a transition metal compound to obtain the catalyst. The present invention also relates to a process for preparation of a catalyst system from said catalyst and preparation of a polyolefins from the catalyst system.

专利号:US-8053165-B2
优先权日:2008-03-18
标 题:Hydroxyl-containing monomer, polymer, resist composition, and patterning process
发明人：KINSHO TAKESHI; OHASHI MASAKI; HASEGAWA KOJI; WATANABE TAKERU
权利人:SHINETSU CHEMICAL CO
摘要:A hydroxyl-containing monomer of formula (1) is provided wherein R 1 is H, F, methyl or trifluoromethyl, R 2 and R 3 are monovalent C 1 -C 15 hydrocarbon groups, or R 2 and R 3 may form an aliphatic ring. The monomers are useful for the synthesis of polymers which have high transparency to radiation of up to 500 nm and the effect of controlling acid diffusion so that the polymers may be used as a base resin to formulate radiation-sensitive resist compositions having a high resolution.

专利号:US-3928347-A
优先权日:1968-11-08
标 题:Pyrazinylmalonic acid esters and salts and pyrazinylacetic acids, esters and salts
发明人：SCHWARTZ NORMAN; MOHRBACHER RICHARD J
权利人:MCNEILAB INC
摘要:The compound, 2,3-diphenyl-5-ethylpyrazine, useful as a precursor in the synthesis of those compounds of the class of pyrazine, arylpyrazine, diphenylpyrazine, and cycloalkylpyrazine malonates, acetates, acetamides, and acetic acids, useful for their ultraviolet light absorption properties.

专利号:WO-2004076425-A1
优先权日:2003-02-21
标题:Improved synthesis of macrocyclic tetraamido compounds and new metal insertion process

专利号:US-4046763-A
优先权日:1968-11-08
标题:2,3-Diphenyl-5-ethylpyrazine
发明人：SCHWARTZ NORMAN; MOHRBACHER RICHARD J
权利人:MCNEILAB INC
摘要:The compound 2,3-diphenyl-5-ethyl-pyrazine, useful as a precursor in the synthesis of those compounds of the class of pyrazine, arylpyrazine, diphenylpyrazine, and cycloalkylpyrazine malonates, acetates, acetamides, and acetic acids, useful for their ultraviolet light absorption properties.