Reactions of saturated NHC•boranes with electron deficient alkyne and alkene. Borirane formation, their reactivities, and coupling of tetracyanoethylene

Key Points

• To investigate the reactions of saturated NHC•boranes with electron deficient alkyne and alkene, and their subsequent reactivities.
• Utilized five- and six-membered saturated N-heterocyclic carbene boranes (NHC•BH3) in reactions with electron deficient substrates.
• Examined the resulting borirane formations and their reactivities.
• Explored the coupling with tetracyanoethylene.
• Both five- and six-membered saturated NHC•BH3 effectively react with electron deficient alkynes and alkenes to form boriranes.
• Coupling with tetracyanoethylene was successfully achieved, showcasing diverse reactivity.
• Formation yields and specific reaction conditions detailed in the study.