Synthesis of 2-Substituted Quinolines <i>via</i>
Rhodium(III)-Catalyzed C-H Activation of Imidamides and Coupling with Cyclopropanols
作者:Xukai Zhou、Zisong Qi、Songjie Yu、Lingheng Kong、Yang Li、Wan-Fa Tian、Xingwei Li
DOI:10.1002/adsc.201601278
日期:2017.5.17
An efficient synthesis of 2-substituted quinolines from readily available cyclopropanols and imidamides has been developed, where the cyclopropanol acts as a C3 synthon. With the assistance of a bifunctional imidamide directing group, the reaction occurred via sequential C–H/C–C cleavage and C–C/C–N bond formation.
Process and composition for inhibiting iron and steel corrosion
申请人:PUMPTECH N.V.
公开号:EP0276879A1
公开(公告)日:1988-08-03
A composition and method for inhibiting the corrosion of iron and steel in the presence of aqueous acid at high temperatures comprising adding to the acid an effective corrosion-inhibiting amount of at least one iodide salt, at least compound selected from the group of formic acid compounds, formic acid derivatives, and formate esters, and an amine or a quaternary nitrogen compound, and/or an oxygen-containing compound such as a phenyl ketone, phenyl aldehyde, or an alkynol.
Palladium-Catalyzed Approach for the General Synthesis of (<i>E</i>)-2-Arylmethylidene-<i>N</i>-tosylindolines and (<i>E</i>)-2-Arylmethylidene-<i>N</i>-tosyl/nosyltetrahydroquinolines: Access to 2-Substituted Indoles and Quinolines
A facile and efficient method for the synthesis of (E)-2-arylmethylidene-N-tosylindolines and (E)-2-arylmethylidene-N-tosyl/nosyltetrahydroquinoline variants has been developed throughpalladium-catalyzed cyclocondensation of aryl iodides with readily available 1-(2-tosylaminophenyl)prop-2-yn-1-ols and their higher homologues, respectively. The proposed reaction mechanism invokes the operation of