13180-21-7Relevant articles and documents
Co(III)-Catalyzed Annulative Vinylene Transfer via C-H Activation: Three-Step Total Synthesis of 8-Oxopseudopalmatine and Oxopalmatine
Li, Xinghua,Huang, Ting,Song, Ying,Qi, Yue,Li, Limin,Li, Yanping,Xiao, Qi,Zhang, Yuanfei
supporting information, p. 5925 - 5930 (2020/08/12)
The Co(III)-catalyzed redox-neutral annulation of benzamides and acrylamides with vinylene carbonate for the synthesis of isoquinolinones and pyridinones has been developed. This protocol employing inexpensive Co(III) as the catalyst tolerated diverse functional groups and substitution patterns, affording the target products with good to excellent yields. The synthetic utility of this transformation was demonstrated by a three-step synthesis of gusanlung D, 8-oxopseudopalmatine, and oxopalmatine.
Regioselective α-arylation of coumarins and 2-pyridones with phenylhydrazines under transition-metal-free conditions
Chauhan, Parul,Ravi, Makthala,Singh, Shikha,Prajapati, Prashant,Yadav, Prem P.
, p. 109 - 118 (2016/01/09)
A facile regioselective metal-free direct α-arylation of coumarins and 2-pyridones is achieved by the reaction of coumarins and 2-pyridones with phenylhydrazine in good yields. The reaction proceeds at room temperature under mild conditions using inexpensive reagents and without the need for step intensive activating groups. The methodology is operationally simple, practically viable and also allows the coupling of similar nitrogen heterocycle aza-coumarins without prerequisite N-protection.
Iron-catalyzed regioselective direct arylation at the C-3 position of N-alkyl-2-pyridone
Modak, Atanu,Rana, Sujoy,Maiti, Debabrata
, p. 296 - 303 (2016/09/09)
A number of pharmaceutical compounds possess an arylated 2-pyridone moiety. The existing reports using expensive starting materials and/or superstoichiometric metal salts have prompted us to explore a possible user-friendly method for their synthesis. In this report, we demonstrate an easy-to-handle reaction condition with an iron catalyst for the exclusive generation of C-3-arylated pyridone via C-H functionalization.