Synthesis of Functionalized Triarylmethanes and Pyranones Based on Cyclization Reactions of Free and Masked Dianions and Regioselective Palladium(0)-Catalyzed Reactions of Functionalized Sulfones, Benzophenones, Pyrazoles, Indenones, and Furans
Functionalized triarylmethanes were prepared with [3+3] cyclization. 2,3-dihydro fluorinated and non fluorinated pyranones were prepared in one step strategy. The Regioselective Suzuki-Miyaura and Sonogashira reaction of the bis(triflates) of 2,4-dihydroxybenzophenone and ,2,4-dihydroxydiphenylsulfone and 2,3-Dibromoindenone with arylboronic acids gave 2,4-diarylbenzophenones and 2,3-dibromoindenone were also studied. Furthermore, The Suzuki-Miyaura reactions of N-protected 3,4,5-tribromopyrazole, 2,3,4,5-tetrabromofuran.Funktionalisierte Triarylmethane wurden durch [3+3]-Cyclisierungen dargestellt. Fluorierte 2,3-Dihydro- und nicht fluorierte pyranone wurden in einem Schritt. Regioselektive Suzuki-Miyaura- und Sonogashira-Reaktionen der Bistriflate des 2,4-Dihydroxybenzophenons und des 2,4′-Dihydroxydiphenylsulfones und 2,3-Dibromindenone. Die Suzuki-Miyaura-Reaktionen von N-geschützten 3,4,5-Tribrompyrazolen, 2,3,4,5-Tetrabromfuranen
