作者:Erik Daa Funder、Julie B. Trads、Kurt V. Gothelf
DOI:10.1039/c4ob01931h
日期:——
4-dihydropyridine (DHP) are activated by oxidation for acyl transfer to amines, alcohols and thiols. In the reduced form the DHP amide is stable towards reaction with amines at room temperature. However, upon oxidation with DDQ the acyl donor is activated via a proposed pyridinium intermediate. The activated intermediate reacts with various nucleophiles to give amides, esters, and thio-esters in moderate
1,4-二氢吡啶(DHP)的酰胺通过氧化活化,将酰基转移为胺,醇和硫醇。在室温下,DHP酰胺以还原形式对与胺的反应稳定。但是,在用DDQ氧化后,酰基供体通过拟议的吡啶鎓中间体被活化。活化的中间体与各种亲核试剂反应,以中等至高收率得到酰胺,酯和硫代酯。