Synthesis of Functionalized Alkylidene Indanes and Indanones through Tandem Phosphine–Palladium Catalysis
摘要:
Densely functionalized alkylidene indanes and indanones can be prepared efficiently in On pot, in high yields with good stereoselectivities (in some cases exclusively the Z-isomer), through a route involving phosphine-catalyzed Michael addition followed by palladium-catalyzed Heck cyclization. These transformations tolerate substrates bearing various substituents around the indane/indanone motif. Employing this technology, a concise formal synthesis of sulindac, nonsteroidal anti-inflammatory drug, has been established.
Synthesis of Functionalized Alkylidene Indanes and Indanones through Tandem Phosphine–Palladium Catalysis
摘要:
Densely functionalized alkylidene indanes and indanones can be prepared efficiently in On pot, in high yields with good stereoselectivities (in some cases exclusively the Z-isomer), through a route involving phosphine-catalyzed Michael addition followed by palladium-catalyzed Heck cyclization. These transformations tolerate substrates bearing various substituents around the indane/indanone motif. Employing this technology, a concise formal synthesis of sulindac, nonsteroidal anti-inflammatory drug, has been established.
Cobalt-Catalyzed Regioselective Synthesis of Indenamine from<i>o-</i>Iodobenzaldimine and Alkyne: Intriguing Difference to the Nickel-Catalyzed Reaction