Efficient Synthesis of Fused 1,2,3-Triazolo-δ-lactams Using Huisgen [3 + 2] Dipolar Cycloaddition “Click-chemistry” in Water

Abstract

A general approach for the quick synthesis of various 1,2,3-triazolo-δ-lactams has been described, which involves the Huisgen [3 + 2] dipolar cycloaddition of azides derived from different amino acids with dimethyl acetylenedicarboxylate in water followed by cyclization.