By exploiting the chemistry of bifunctional isocyanides, straightforward, rapid, and scalable Ugi-tetrazole-based multicomponent reaction heteroannulations were developed. Our synthetic approach provides a series of diverse fused tetrazolo piperazinones and 1,4-diazepanones in just one step.
Key words
isocyanides - tetrazoles - piperazinones - diazepanones - Ugi reaction - multicomponent reaction