PhI(OAc)<sub>2</sub>–BF<sub>3</sub>–OEt<sub>2</sub>mediated domino imine activation, intramolecular C–C bond formation and β-elimination: new approach for the synthesis of fluorenones, xanthones and phenanthridines
作者:Satinath Sarkar、Narender Tadigoppula
DOI:10.1039/c4ra06159d
日期:——
PhI(OAc)2âBF3âOEt2 mediated domino synthesis of biologically important fluorenones, xanthones and phenanthridines has been developed. The reaction proceeds through imine activation, intramolecular CâC bond formation and β-elimination.
Rapid Access to Substituted Indenones through Grignard Reaction and Its Application in the Synthesis of Fluorenones Using Ring Closing Metathesis
作者:Nabin Parui、Tirtha Mandal、Jyotirmayee Dash
DOI:10.1002/ejoc.202201285
日期:2023.2.13
Indenones are synthesized using a practical and scalable method. The addition of Grignard reagents to indene-1,3-diones provides 2,3-disubstituted indenones through dehydrative aromatization. Significantly, a naturally occurring neo-lignan has been synthesised in one pot. Moreover, diallyl indenones have been utilized as ring-closing metathesis (RCM) precursors for synthesising fluorenones through