CAS: 17828-53-4; 5,5'-(1,4-Phenylenebis(Oxy))Bis(Isobenzofuran-1,3-Dione)

相似化合物

1823-59-2 57830-14-5 21345-01-7

上下游产品

1,4-Bis(4-Oxy-1,2-Benzenedicarboxylic Acid)Benzene 18959-88-1

反应 10.0H,以90%的收率获得3,3',4,4'-三苯双醚四甲酸二酐
参考文献:一种芳香族二醚二酐的制备方法
标题:一种芳香族二醚二酐的制备方法
摘要:本发明公开了一种芳香族二醚二酐的制备方法,利用异丁烯或者叔丁醇作为氯代或硝基邻苯二甲酸的羧基的保护基,在与双酚二钠盐发生醚化反应后,获得的中间体中的叔丁酯保护基无需强碱处理,用少量酸处理即可脱除,获得二醚四酸,最后,固体四酸在合适的温度下直接成酐,无需用醋酐脱水,而且整个过程的反应时间只需21小时左右.本发明的芳香族二醚二酐的制备方法反应周期短,工艺简单,安全,生产效率高,生产成本低.

专利信息

专利号:US-11220480-B2
优先权日:2016-12-31
标题 :Synthesis of reactive intermediates for polyetherimides, and uses thereof
发明人：GUGGENHEIM THOMAS LINK; CHIONG HENDRICH; QUEVEDO SANCHEZ BERNABE; MISIEGO ARPA CARMEN ROCIO; RODRIGUEZ ORDONEZ JUAN JUSTINO; NIEVES REMACHA JAVIER
权利人:SHPP GLOBAL TECH BV
摘要:A method for producing a reactive intermediate composition, including: reacting a substituted phthalic anhydride of the formula (I) with a diamine of the formula H 2 N—R—NH 2 in the presence of an aromatic dianhydride in an amount of 10 to 50 mole percent based on the total moles of anhydride functionality in the reaction; wherein the reacting is conducted in an aprotic solvent in a reactor, under conditions effective to produce the reactive intermediate composition; and wherein X comprises a halogen or a nitro group, and R comprises a C 6-36 aromatic hydrocarbon group or a halogenated derivative thereof, a straight or branched chain C 2-20 alkylene or a halogenated derivative thereof, or a C 3-8 cycloalkylene or a halogenated derivative thereof.

专利号:US-12180140-B2
优先权日:2022-12-23
标 题 :Compounds and methods for liquid phase oligonucleotide synthesis
发明人：YANG GAOMAI; XIE MIN; YANG HONGRONG; WANG SHENGDONG; LAU ALDRICH N K; ZOU RUIMING; YU DAVID
权利人:HONGENE BIOTECH CORP
摘要:The present disclosure relates to methods and compounds for liquid phase oligonucleotide synthesis employing the use of small molecules with lipophilic groups. Methods for making an oligonucleotide by liquid phase oligonucleotide synthesis using the compounds described herein are also provided.

专利号:US-12134630-B2
优先权日:2022-06-21
标 题 :Compositions and methods for liquid phase oligonucleotide synthesis
发明人：YANG GAOMAI; SONG JINGSHE; WANG SHENGDONG; YAO YUN-CHIAO; YANG HONGRONG; YU DAVID; LAU ALDRICH N K
权利人:HONGENE BIOTECH CORP
摘要:Embodiments of the present application relate to polymers used as polymeric polyvalent hubs for liquid phase oligonucleotide synthesis. Methods for making an oligonucleotide by liquid phase oligonucleotide synthesis using the polymers are also provided.

专利号:US-2019315690-A1
优先权日:2016-12-31
标 题:Synthesis of reactive intermediates for polyetherimides, and uses thereof

专利号:US-10774105-B2
优先权日:2014-11-20
标题:Phosphoroamidate esters, and use and synthesis thereof
发明人：KOKORIS MARK STAMATIOS; TABONE JOHN; NABAVI MELUD; JACOBS AARON
权利人:STRATOS GENOMICS INC
摘要:Phosphoramidate esters and related nucleotide analogs useful in polynucleotide sequencing techniques, and synthetic methods for preparing those compounds, are disclosed, including compounds having the following structure: n nwherein R 1 , R 2 , R 3 and R 4 are as defined herein. These compounds include nucleotide phosphoramidates analogs that are modified on the alpha-phosphate to enable attachment of a variety of application-specific substituents such as tether molecules.

专利号:WO-2018126105-A1
优先权日:2016-12-31
标 题:Synthesis of reactive intermediates for polyetherimides, and uses thereof