We report the first solid-phase synthesis of (1,8- dioxo-2,3,4,5,6,7,8,9-octahydro-1H-xanthen-9-yl)acetic acids via a tandem
Michael-Michael cyclization with resin-bound propiolic
acid as Michael acceptor and cyclohexanediones.
polycycles - tandem reactions - cycloadditions - Michael addition - solid-phase synthesis