2 Halogenoimidazolium salt catalyzed aza Diels Alder reaction through halogen bond formation.
2 Halogenoimidazolium salts are found to catalyze aza Diels Alder reaction of aldimines with Danishefsky diene in an efficient manner. Comparative studies and titration experiments support the formation of halogen bonding between imines and catalysts.
Organic letters