Stereoselective and Regioselective Intramolecular Friedel–Crafts Reaction of Aziridinium Ions for Synthesis of 4-Substituted Tetrahydroisoquinolines
作者:Hyun-Soon Chong、Yunwei Chen
DOI:10.1021/ol4013537
日期:2013.12.6
Optically active 4-substituted tetrahydroisoquinolines were synthesized via intramolecular Friedel–Crafts (FC) reactions of aziridinium ions in a highly regio- and stereoselective manner. Control experiments suggest the formation and ring-opening of aziridinium ions as the key intermediates in the Lewis acid catalyzed FC reactions.
通过氮丙啶鎓离子的分子内弗里德尔-克来福特 (FC) 反应以高度区域和立体选择性方式合成了光学活性 4-取代四氢异喹啉。对照实验表明氮丙啶鎓离子的形成和开环是路易斯酸催化 FC 反应中的关键中间体。
265. Di-N-substituted 2-halogenoethylamines. Part VI. NN-dialkyl-(or N-alkyl)-2-alkyl(or aryl or arylalkyl) derivatives: synthesis, reactivity, and pharmacology