Enantioselective intramolecular dearomative Heck reactions have been developed by Pd-catalyzed cross-coupling of aryl halides or aryl triflates with the internal C═C bond of indoles, benzofurans, pyrroles, and furans. A variety of structurally unique spiroheterocycles and benzofused heterocycles having N/O-substituted quaternary carbon stereocenters, and exocyclic olefin moieties were afforded in moderate
An expedient method for the synthesis of fused glycosylquinolin-2-ones and glycosylspirooxindoles through an unprecedented intramolecularPd-catalyzed anomeric C–H activation of the sugar moiety of 2-bromophenyl glycosylcarboxamides is reported. The scope of the reaction is broad and tolerates a wide range of functional groups.
This paper reveals the diastereoselective Pd‐catalyzed intramolecular α‐C(sp3)−Harylation in amides. The intermolecular and intramolecular α‐arylation of tertiary C(sp3)−H bond of carbonyl compounds have been well documented in the literature. Nevertheless, the diastereoselective intramolecular α‐arylation of tertiary C(sp3)−H bond involving sterically hindered spirocyclic carbonyl substrates, especially