Thermal oxy-Coperearrangement of substrates 5,7 and 11 resulted in ring expansion and annulation. The effect of alkene substituents and variation in the ring systems on the reaction has been studied.
The synthesis of the tricyclic ketol which is a potential intermediate for non-aromatic steroids has been achieved via an anionic oxy-Coperearrangement.
Vinyltriarylbismuthonium Salts: Powerful Vehicles for α-Vinylation of Carbonyl Compounds
作者:Li Li、Lingbowei Hu、Jirapon Sae-Jew、Viresh H. Rawal
DOI:10.1021/jacs.4c05709
日期:2024.7.10
to the formation of α-vinylated carbonyl compounds in good to excellent yields and with a remarkably broad substrate scope. Critically, this vinylation method is effective for enolates generated via numerous methods, enabling the sequencing of reactions that generate enolates with the vinylation step and the ready synthesis of diverselyfunctionalizedcompounds, thereby underscoring the versatility and