Reversal of polarity by catalytic SET oxidation: synthesis of azabicyclo[<i>m</i>.<i>n</i>.0]alkanes <i>via</i> chemoselective reduction of amidines
作者:Kirana Devarahosahalli Veeranna、Kanak Kanti Das、Sundarababu Baskaran
DOI:10.1039/d1ob00416f
日期:——
A one-pot catalytic method has been developed for the stereoselective synthesis of cyclopropane-fused cyclic amidines using CuBr2/K2S2O8 as an efficient single electron transfer (SET) oxidative system. The generality of this mild method is demonstrated with a wide variety of substrates to furnish pharmaceutically important amidines containing aza-bicyclic and novel aza-tricyclic frameworks in very
使用CuBr 2 /K 2 S 2 O 8作为有效的单电子转移(SET)氧化体系,开发了一种用于立体选择性合成环丙烷稠合环脒的单锅催化方法。这种温和方法的普遍性通过多种底物得到证明,以非常好的收率提供含有氮杂-双环和新型氮杂-三环骨架的药学上重要的脒。将环脒化学选择性还原为 2-/3-氮杂双环[ m . n .0]烷烃和八氢吲哚已使用 NaBH 4 /I 2开发试剂系统。化学选择性还原脒官能团的合成范围已在基于亚氨基糖的 (±)-表喹酰胺类似物的立体选择性合成中得到例证。