The present application relates to novel 4-chromenonyl-1,4-dihydropyridines, process for their preparation, their use for the treatment and/or prophylaxis of diseases, and their use for the manufacture of medicaments for the treatment and/or prophylaxis of diseases, especially cardiovascular disorders.
Pd-Catalyzed Triple-Fold C(sp<sup>2</sup>)–H Activation with Enaminones and Alkenes for Pyrrole Synthesis via Hydrogen Evolution
作者:Leiqing Fu、Yunyun Liu、Jie-Ping Wan
DOI:10.1021/acs.orglett.1c01301
日期:2021.6.4
The synthesis of NH-free pyrroles via Pd-catalyzed annulation of enaminones and alkenes is reported. With the catalysis of Pd(II), the activation of triple C(sp2)–H bonds, including one internal C(sp2)–H bond in enaminone, has been activated to provide various pyrroles. The interesting evolution of hydrogen gas from the reactions has been observed by a hydrogen detector.
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.