Deaminative Olefination of Methyl <i>N</i>-Heteroarenes by an Amine Oxidase Inspired Catalyst
作者:Pradip Ramdas Thorve、Biplab Maji
DOI:10.1021/acs.orglett.0c04060
日期:2021.1.15
We explored the bioinspired o-quinone cofactor catalyzed aerobic primary amine dehydrogenation for a cascade olefination reaction with nine different methyl N-heteroarenes, including pyrimidines, pyrazines, pyridines, quinolines, quinoxolines, benzimidazoles, benzoxazoles, benzthiazoles, and triazines. An o-quinone catalyst phd (1,10-phenanthroline-5,6-dione) combined with a Brønsted acid catalyzed
我们探索了仿生邻醌辅因子催化的有氧伯胺脱氢与九种不同的甲基N-杂芳烃的级联烯化反应,包括嘧啶、吡嗪、吡啶、喹啉、喹啉、苯并咪唑、苯并恶唑、苯并噻唑。一个ø与布朗斯台德酸组合的-quinone催化剂博士(1,10-菲咯啉-5,6-二酮)催化的反应。N-杂芳基芪类化合物在温和条件下以高产率和 ( E )-选择性合成,使用氧气 (1 atm) 作为唯一氧化剂,无需过渡金属盐、配体、化学计量碱或氧化剂。
Anil-Synthese 22. Mitteilung über die Herstellung von Styryl-und Distyryl-Derivaten des Pyridins
作者:Adolf Emil Siegrist、Hans Rudolf Meyer、Peter Gassmann、Serge Moss
DOI:10.1002/hlca.19800630524
日期:1980.7.9
Preparation of Styryl and Distyryl Derivatives of Pyridine
The photophysical and photochemical properties of some symmetric (E,E)-2,6-di(arylvinyl) derivatives of pyridine, where the side aryl groups were phenyl, pyridyl, furanyl, thienyl and thiazolyl were investigated. The conformational equilibria between the two more abundant rotamers and their role in the kinetic competition between the radiative and reactive (E,E→E,Z) relaxation channels of their lowest
Method for the termination of living polymers, and compounds suitable for the purpose
申请人:ENICHEM ELASTOMERI S.p.A.
公开号:EP0127907A1
公开(公告)日:1984-12-12
Coupling agents of general formula
and their use in a method for the termination of living polymers obtained by anionic polymerisation of diene and/or vinylaromatic monomers.
Hydrogenated block copolymers and process for the synthesis thereof
申请人:ENIRICERCHE S.p.A.
公开号:EP0209183A2
公开(公告)日:1987-01-21
Linear and/or radial block copolymers, having high-transient hard phase and saturated soft phase, and displaying at the same time high operating temperature and excellent thermo-oxidative and photo-oxidative stability are synthetized.