CAS: 6289-46-9; Dimethyl 2,5-Dioxocyclohexane-1,4-Dicarboxylate

相似化合物

527-31-1 637-88-7 787-07-5

丁二酸二甲酯置于sodium Methylate,硫酸体系中,用 甲醇,水 作为反应溶剂,化学反应生成 2,5-二甲氧酰基-1,4-环己二酮
参考文献:通过不对称二醇的位点和立体选择性聚合交替等规聚羟基链烷酸酯
标题:通过不对称二醇的位点和立体选择性聚合交替等规聚羟基链烷酸酯
摘要:天然产生的可生物降解聚羟基脂肪酸酯 (Pha) 有望成为不可再生/可降解塑料的更可持续替代品,但生物 Pha 的立体微观结构严格限于等规 (R)-聚合物或随机序列的共聚物.通过环状(二)酯的催化开环聚合 (Rop) 进行化学合成可以方便地获得各种 Pha 微观结构,包括那些具有确定的共聚单体序列和立构规整度的微观结构.然而,现有的方法尚未实现交替全同 Pha 的合成.在这里,我们报告了不对称双取代的八元二酯的设计 (Rac-8Dl R1-R2) 及其具有离散手性催化剂的位点和立体选择性 Rop,能够合成交替全同立构 Pha,聚(3-羟基丁酸酯-Alt-3-羟基戊酸酯)(alt-P3Hbv)和聚(3-羟基丁酸酯-Alt-3-羟基庚酸酯)) (Alt-P3Hbhp),具有高到定量 (>99%) 的交替和全同立构规整度,M N高达 113 Kda 和đ = 1.01.这种 Pha
DOI:10.1021/jacs.2C08791

专利信息

专利号:US-11744150-B2
优先权日:2012-01-20
标 题:Synthesis of aza-acenes as novel n-type materials for organic electronics
发明人：THOMPSON MARK E; SOMMER JONATHAN R; BARTYNSKI ANDREW
权利人:UNIV SOUTHERN CALIFORNIA
摘要:Acenes, such as aza-acenes are attractive materials for organic semiconductors, specifically for n-type materials. There are disclosed new derivatives of acenes that are fabricated using novel synthesis. For example, the disclosed fabrication strategies have allowed for the first time new aza-tetracene and aza-pentacene derivatives. The HOMO and LUMO energy levels of these materials are tunable through appropriate substitution and as predicted, deepened. There are also disclosed organic photosensitive devices comprising at least one aza-acene such as aza-tetracene and aza-pentacene.

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-7026481-B2
优先权日:2002-06-27
标题 :Synthesis for quinacridone compounds
发明人：COSIMBESCU LELIA; SHI JIANMIN
权利人:EASTMAN KODAK CO
摘要:Disclosed is a process for forming a N,N′-diarylquinacridone compound comprising the step of reacting a 1,4-dialkylcarboxylate-2,5-bis(N-arylamino) benzene with an iodoaryl compound to form the corresponding 2,5-bis(N-diarylamino) compound. The process is versatile and provides high yields and purity for the synthesis of N,N′-diarylquinacridone compounds.

专利号:EP-0536083-B1
优先权日:1991-09-30
标题 :Process for the synthesis of dialkyl succinylsuccinate esters and their conversion to dialkyl 2,5-diarylamino-3,6-dihydroterephthalate esters
发明人：CAMPBELL COLIN D DR; JAFFE EDWARD E DR
权利人:CIBA GEIGY AG
摘要:A process for the preparation of dialkyl succinylsuccinate esters from mixtures of dialkyl succinates, formed by separate or in situ transesterification of dimethyl succinate with C<6> to C1/4 alkanols and their conversion to dialkyl 2,5-diarylamino-3,6-dihydroterephthalate esters having high solubility in organic solvents.

专利号:US-2019211144-A1
优先权日:2018-01-11
标 题:Synthesis of crystalline polymers from cyclic diolides

专利号:US-2023312815-A1
优先权日:2018-01-11
标题 :Synthesis of polymers from cyclic diolides