A concise and efficient method for the synthesis of alkynyl/benzoyl-functionalized quinolines through TfOH-promoted cascade 1,4-conjugate addition/intramolecular annulation/aromatization process is established.
Copper-catalyzed C–H/N–H annulation of enaminones and alkynyl esters for densely substituted pyrrole synthesis
作者:Leiqing Fu、Jie-Ping Wan、Liyun Zhou、Yunyun Liu
DOI:10.1039/d1cc06768k
日期:——
copper-catalyzed annulation of enaminones with alkynyl esters for the facilesynthesis of different pyrroles with a 2,3,4,5-tetrasubstituted structure has been developed. With Cu(OAc)2 as the only catalyst, the tunable synthesis of 2-vinyl and 2,3-dicarboxyl-functionalized pyrroles has been achieved by using terminal and internal alkynyl esters, respectively. The synthesis of 2-vinyl pyrroles represents the first
Rongalite as C1 Synthon in the Synthesis of Divergent Pyridines and Quinolines
作者:Huan Gao、Liyun Zhou、Jie-Ping Wan、Yunyun Liu
DOI:10.1021/acs.joc.3c00428
日期:2023.6.2
Rongalite has been used as a cheap and efficient carbon synthon for the synthesis of divergent N-heteroaromatics, including different pyridines and quinolines. The selective synthesis of different products can be achieved by employing enaminones or enaminones/anilines as reaction partners. In addition, compared with the reaction using conventional aldehyde synthons, rongalite displays an evident advantage