Electrochemical E-Selective Semireductive Dicarboxylation of Aryl Alkynes with CO2
作者:Lan Zhao、Wen-Jun Xie、Zheng-Zheng Meng、Hong-Ru Li、Liang-Nian He
DOI:10.1021/acs.orglett.4c00860
日期:2024.4.19
Herein, we report an electrochemical protocol for the dicarboxylation of aryl alkynes using CO2. With a graphite rod as the cathode and Al as the sacrificial anode, a series of valuable butenedioic acids are obtained in moderate to excellent yields with an E/Z ratio up to 50:1. This method features high E-selectivity, high step and atom economy, easy scalability, and a nice substrate scope, which renders
在此,我们报告了使用 CO 2芳基炔烃二羧化的电化学方案。以石墨棒为阴极,Al为牺牲阳极,以中等至优异的收率获得了一系列有价值的丁烯二酸, E / Z比高达50:1。该方法具有高E选择性、高步骤和原子经济性、易于扩展性和良好的底物范围,这使其在有机合成和材料化学中具有广阔的应用前景。
POLYESTER COPOLYMER
申请人:Avantium Knowledge Centre B.V.
公开号:EP3625283A1
公开(公告)日:2020-03-25
Polyester Copolymer
申请人:Avantium Knowledge Centre B.V.
公开号:US20210139645A1
公开(公告)日:2021-05-13
A polyester copolymer, having a number average molecular weight of equal to or more than 4000 grams/mole and having a glass transition temperature of less than 160° C., containing:
(a) in the range from equal to or more than 45 mole % to equal to or less than 50 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more bicyclic diol monomer units, wherein such one or more bicyclic diol monomer units is/are derived from one or more bicyclic diols chosen from the group consisting of isosorbide, isoidide, isomannide, 2,3:4,5-di-O-methylene-galactitol and 2,4:3,5-di-O-methylene-D-mannitol;
(b) in the range from equal to or more than 25 mole % to equal to or less than 49.9 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of an oxalate monomer unit;
(c) in the range from equal to or more than 0.1 mole % to equal to or less than 25 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more linear C3-C12 dicarboxylate monomer units; and
(d) optionally equal to or more than 0 mole % to equal to or less than 5 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more additional monomer units.
A process for producing such a polyester copolymer, a composition containing such polyester copolymer, a method for manufacturing an article comprising the use of one or more of such polyester copolymers and an article obtained or obtainable by such a method.
US4713472A
申请人:——
公开号:US4713472A
公开(公告)日:1987-12-15
[EN] POLYESTER COPOLYMER<br/>[FR] COPOLYMÈRE DE POLYESTER
申请人:AVANTIUM KNOWLEDGE CENTRE BV
公开号:WO2018211132A1
公开(公告)日:2018-11-22
A polyester copolymer, having a number average molecular weight of equal to or more than 4000 grams/mole and having a glass transition temperature of less than 160°C, containing: (a) in the range from equal to or more than 45 mole % to equal to or less than 50 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more bicyclic diol monomer units, wherein such one or more bicyclic diol monomer units is/are derived from one or more bicyclic diols chosen from the group consisting of isosorbide, isoidide, isomannide, 2,3:4,5-di-O-methylene-galactitol and 2,4:3,5-di-O-methylene-D- mannitol; (b) in the range from equal to or more than 25 mole % to equal to or less than 49.9 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of an oxalate monomer unit; (c) in the range from equal to or more than 0.1 mole % to equal to or less than 25 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more linear C3-C12 dicarboxylate monomer units; and (d) optionally equal to or more than 0 mole % to equal to or less than 5 mole %, based on the total amount of moles of monomer units within the polyester copolymer, of one or more additional monomer units. A process for producing such a polyester copolymer, a composition containing such polyester copolymer, a method for manufacturing an article comprising the use of one or more of such polyester copolymers and an article obtained or obtainable by such a method.