An Expedient Route to 3-Chlorothioxanthen-9-one-10,10-dioxide and Derivation by Palladium-Catalyzed Coupling
作者:Scott. Gilbertson、Pedro Lory、Anton Agarkov
DOI:10.1055/s-2006-951520
日期:2006.11
Chemistry has been developed that allows for the synthesis of a series of novel tricyclic thioxanthen-9-one-10,10-dioxides. A regioselective synthesis of the novel core substrate 3-chlorothioxanthen-9-one-10,10-dioxide was achieved in 85% yield over three steps without the need for chromatographic purification. Subsequent microwave-assisted coupling methodology afforded the desired novel 3-substituted tricyclic compounds in good to excellent yield.