Intramolecular arylation

Ethylene-aryl intramolecular interaction in the excited state leading to cycliza-tion products is known for a number of diverse systems.10 The formation of benzocyclobutenes from styrenes is the simplest reaction of this type and it has recently been observed in the irradiation of polyfluorinated styrenes (112)157 

LTB4 Antagonist and MCH-1R Receptor Modulator (sp C-H Arylation/Intramolecular C-H Amination) 

In 2006, Willis and co-workers reported a tandem palladium-catalyzed regioselective synthesis of 3-allqrlated 2,4-quinazolinediones via urea arylation-intramolecular ester amidation. o-Halo benzoates were reacted with monoallqrl ureas and gave the corresponding quinazolinedione products in good to excellent yields (Scheme 3.60). The reactions are 

In 2005, Tsang et al. reported the new methodology for carbazole synthesis. The key feature of this methodology is the combination of a C—H bond functionalization and an intramolecular N-arylation (intramolecular C—H bond amination) starting from N-substituted-2-arylanilines. In the presence of a catalytic amount of 

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