novel reaction produces α-tetrazolyl N-heterocycles directly from N-heterocycles without involving pre-functionalization/pre-oxidation steps. Importantly, the stereoselective reaction involving chiral amines or chiral isocyanides allowed the expeditious syntheses of nucleoside analogs and α-tetrazolyl pyrrolidine in enantioenriched form.
据报道,前所未有的立体选择性C(sp 3)-H功能化使Ugi-
叠氮化物(CH-Ugi-
叠氮化物)反应成为可能。该新颖的反应直接从N-杂环产生α-
四唑基N-杂环,而无需涉及预功能化/预氧化步骤。重要的是,涉及手性胺或手性异
氰化物的立体选择性反应允许对映体富集形式的核苷类似物和α-
四唑基
吡咯烷的快速合成。