A pot-economical and diastereoselective synthesis involving catalyst-free click reaction for fused-triazolobenzodiazepines†
Abstract
A pot-economical synthesis involving sequential [3 + 2] cycloadditions of an azomethine ylide and an azide–alkyne (click reaction) has been developed for diastereoselective synthesis of novel triazolobenzodiazepine-containing polycyclic compounds. A new example of catalyst-free click chemistry of non-strained alkynes is also disclosed.