Nucleophilic Addition to Iminium Ethers in the Preparation of Functionalized <i>N</i>-Alkyl Heterocycles
作者:Erik Fenster、Brenton T. Smith、Vijaya Gracias、Gregory L. Milligan、Jeffrey Aubé
DOI:10.1021/jo702193g
日期:2008.1.1
synthesized by the reactions of ketones with hydroxyalkyl azides. These cationic species react with a variety of nucleophiles via two possible pathways. The initially formed, kinetic product arises from direct addition to the iminium carbon in the substrate. In some cases, the initial adduct reverts to the starting iminium ether and the ultimate product arises from nucleophilic displacement at the
Verfahren zur katalytischen Hydrierung einer aliphatisch ungesättigten Gruppe in einer organischen Verbindung
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP1431272A1
公开(公告)日:2004-06-23
Verfahren zur katalytischen Hydrierung einer aliphatisch ungesättigten Gruppe in einer organischen Verbindung, wobei man einen Katalysator einsetzt, bei dessen Herstellung eine Fällung von katalytisch aktiven Komponenten auf monoklines, tetragonales oder kubisches Zirkoniumdioxid erfolgte.
COMPOSITION FOR REMOVING SULFUR-CONTAINING COMPOUND
申请人:Kuraray Co., Ltd.
公开号:EP3760293A1
公开(公告)日:2021-01-06
Provided is a composition for removing a sulfur-containing compound contained in at least one of a liquid and gas, the sulfur-containing compound being at least one selected from the group consisting of hydrogen sulfide and an -SH group-containing compound, the composition containing an aldehyde and an amine whose conjugate acid has a pKa value of 11.3 or higher in water at 25°C.