Specific <i>Z</i>-Selectivity in the Oxidative Isomerization of Allyl Ethers to Generate Geometrically Defined <i>Z</i>-Enol Ethers Using a Cobalt(II)(salen) Complex Catalyst
作者:Guanxin Huang、Miaolin Ke、Yuan Tao、Fener Chen
DOI:10.1021/acs.joc.0c00004
日期:2020.4.17
synthesis of the geometrically less stable Z-enol ethers is challenging. An efficient Z-selective oxidative isomerization process of allyl ethers catalyzed by a cobalt(II) (salen) complex using N-fluoro-2,4,6-trimethylpyridinium trifluoromethanesulfonate (Me3NFPY•OTf) as an oxidant has been developed. Thermodynamically less stable Z-enol ethers were prepared in excellent yields with high geometric control.
NOVEL TETRACARBOXYLIC DIANHYDRIDE, POLYIMIDE RESIN AND METHOD FOR PRODUCING THE SAME, PHOTOSENSITIVE RESIN COMPOSITIONS, PATTERNING PROCESS, METHOD FOR FORMING CURED FILM, INTERLAYER INSULATING FILM, SURFACE PROTECTIVE FILM, AND ELECTRONIC PARTS
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20190169211A1
公开(公告)日:2019-06-06
The present invention has been made in view of the circumstances herein. An object of the present invention is to provide: a tetracarboxylic dianhydride which can lead to a polyimide usable as a base resin of a photosensitive resin composition capable of forming a fine pattern and obtaining high resolution without impairing excellent characteristics such as mechanical strength and adhesiveness; a polyimide resin obtained by using the tetracarboxylic dianhydride; and a method for producing the polyimide resin. The tetracarboxylic dianhydride is shown by the following general formula (1).
[EN] PROCESS FOR PRODUCING ETHER COMPOUNDS IN PRESENCE OF A COPPER (II) SALT<br/>[FR] PROCEDE DE PRODUCTION DE COMPOSES D'ETHER EN PRESENCE D'UN SEL DE CUIVRE(II)
申请人:SHOWA DENKO KK
公开号:WO2003106024A1
公开(公告)日:2003-12-24
A process for producing allylic ether compounds in presence of a catalyst comprising at least one Cu(II) salt by reaction of an allylic alcohol with either itself or another alcohol.
Production process of 3-alkoxy-1-propanols, and 3-alkoxy-1-propanols obtained by the production process
申请人:Kibino Nobuyuki
公开号:US20070161828A1
公开(公告)日:2007-07-12
In the presence of a catalyst containing at least one element selected from the group consisting of elements of the group III, lanthanoid elements and actinoid elements of the Periodic Table, an allyl alcohol is reacted with an alcohol compound. A method for efficiently producing 3-alkoxy-1-propanol in a single step using an alcohol as a starting material is provided.
Tetracarboxylic dianhydride, polyimide resin and method for producing the same, photosensitive resin compositions, patterning process, method for forming cured film, interlayer insulating film, surface protective film, and electronic parts
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US10919918B2
公开(公告)日:2021-02-16
An object of the present invention is to provide: a tetracarboxylic dianhydride which can lead to a polyimide usable as a base resin of a photosensitive resin composition capable of forming a fine pattern and obtaining high resolution without impairing excellent characteristics such as mechanical strength and adhesiveness; a polyimide resin obtained by using the tetracarboxylic dianhydride; and a method for producing the polyimide resin. The tetracarboxylic dianhydride is shown by the following general formula (1).