CAS: 2121-67-7; 2,4-Dimethylpentanedioic Acid

相似化合物

2121-68-8 617-62-9 27899-21-4

上下游产品

pentane-2,2,4-tricarboxylic acid-2,2-diethyl ester-4-methyl ester 2-ethoxycarbonyl-2,4-dimethyl-pentanedioic acid diethyl ester dimethyl 2,4-dimethylpentanedioate 1,1-diethyl-1-methylmethanetricarboxylic acid racem.-2,4-dimethyl-glutaric acid diethyl ester; 2,4-dimethyl-glutaric acid diethyl esterracem.-2,4-dimethyl-glutaric acid diethyl ester; 2,4-dimethyl-glutaric acid diethyl ester 3,5-dimethyl-piperidine-2,6-dione (3R,5S)-3,5-dimethyldihydro-2H-pyran-2,6(3H)-dione (+/-)-anti-2,4-dimethylglutaric anhydride

2,2,4-戊烷三羧酸三乙酯置于盐酸体系中,用 水 用作溶剂,化学反应 60.0H,以66%的收率获得2,4-二甲基戊二酸
参考文献:碘霉素的形式合成中酸酐的催化烷基化不对称化
标题:碘霉素的形式合成中酸酐的催化烷基化不对称化
摘要:献给斯科特教授丹麦在他65之际个生日. 发布时间为致力于斯科特e.丹麦在他65之际特殊部分的部分次生日. 抽象的 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径.进行离子霉素的合成,其中使用这种方法将四个片段中的三个组装在一起.两种策略(烯醇硅烷/氧碳鎓偶联和还原环化)均未成功安装c23立体中心,但通过还原/ S N 2方法克服了该立体化学问题.除了合成离子霉素的受保护的非对映异构体之外,C17-c32片段的合成还构成正式的总合成. 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径.进行离子霉素的合成,其中使用这种方法将四个片段中的三个组装在一起.两种策略(烯醇硅烷/氧碳鎓偶联和还原环化)均未成功安装c23立体中心,但通过还原/ S N 2方法克服了该立体化学问题.除了合成离子霉素的受保护的非对映异构体之外,C17-c32片段的合成还构成正式的总合成.
Doi:10.1055/s-0037-1610108

专利信息

专利号:US-5629394-A
优先权日:1992-12-17
标 题 :Direct synthesis by living cationic polymerization of nitrogen-containing polymers
发明人：CHERADAME HERVE M; CHEN FRANK J; STANAT JON E R; NGUYEN HUNG A; TABAR BEHROOZ R
权利人:EXXON CHEMICAL PATENTS INC
摘要:A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.

专利号:US-2022010060-A1
优先权日:2018-12-12
标题:Polycarbonate polyols
发明人：FENG XIAOSHUANG; PATIL NAGANATH; BOOPATHI Senthil; GNANOU YVES; HADJICHRISTIDIS NIKOS
权利人:UNIV KING ABDULLAH SCI & TECH
摘要:Embodiments of the present disclosure describe polymerization systems for the synthesis of polycarbonate polyols, methods of synthesizing polycarbonate polyols using the polymerization systems, methods of recovering initiators and/or activators for use or re-use in the synthesis of polycarbonate polyol, and the like. The polymerization systems can comprise an initiator including a mono- or multi-functional carboxylate or carbonate salt having an organic cation as a counter-ion; an optional co-initiator including a mono- or multi-functional protic compound selected from acids, alcohols, water, and combinations thereof; and an activator including a borane compound selected from alkyl boranes and aryl boranes; wherein the activator and one or more of the initiator and co-initiator associate to form an ate complex.

专利号:US-4495355-A
优先权日:1981-12-11
标题:Optically-active diamide derivatives
发明人：FUJITA EIICHI; NAGAO YOSHIMITSU; IKEDA TAKAO; INOUE TAKEHISA
权利人:YAMASA SHOYU KK
摘要:A novel optically active diamide derivative represented by the following general formula is provided, which is useful as a starting material for asymmetric synthesis of optically active compounds, wherein R1 is an acyclic or cyclic, divalent atomic group containing at least one carbon atom which will, upon substitution of one of the heterocyclic groups in the formula with a nucleophilic reagent, stand as an asymmetric center in the substitution product; R2 is a substituent which has such a configuration and a molecular size that the regioselectivity in the substitution reaction of the heterocyclic group with the nucleophilic reagent can be determined by a stereo-chemical interaction thereof with the substituent R1, the steric configuration of the two asymmetric carbon atoms to which the R2 substituents are attached being identical; X is a sulfur atom or an oxygen atom; and n is an integer which is 1 or 2. Such a diamide derivative can be prepared by subjecting the corresponding dicarboxylic acid or an anhydride thereof to a condensation reaction with the corresponding heterocyclic compound in the presence of a condensation agent. The optically-active diamide derivative can be used in the reaction with a nucleophilic reagent to obtain an optically-active compound. The resulting compound can be further modified by subjecting it to reaction with another nucleophilic reagent or to hydrolysis.

专利号:US-2022363823-A1
优先权日:2019-07-05
标题:Recovery and reuse of activators and initiators following polycarbonate synthesis

专利号:WO-2021005470-A1
优先权日:2019-07-05
标题:Recovery and reuse of activators and initiators following polycarbonate synthesis

专利号:EP-3994199-A1
优先权日:2019-07-05
标题 :Recovery and reuse of activators and initiators following polycarbonate synthesis