Bromonium salts: diaryl-λ3-bromanes as halogen-bonding organocatalysts

Bromonium salts have been typically but infrequently used in various reactions as good leaving groups or as aryl or vinyl transfer reagents owing to their extremely high nucleofugality. Herein, we report the synthesis of novel, stable bromonium salts and their first catalytic application to the Michael reaction, with excellent product yield (up to 96%).

Automated summary

Novel, stable bromonium salts have been synthesized and utilized for the first time as catalysts in the Michael reaction, achieving excellent product yield (up to 96%).