Oxidative Difunctionalization of 2-Amino-4<i>H</i>-pyrans in Iodobenzene Diacetate and <i>N</i>-Chlorosuccinimide: Reactivity, Mechanistic Insights, and DFT Calculations
作者:Santhosh Reddy Mandha、Manjula Alla、Vittal Rao Bommena、Jagadeesh Babu Nanubolu、Santosh Kumar Lingala、Soujanya Yarasi
DOI:10.1021/jo301801b
日期:2012.12.7
Oxidative difunctionalization of 2-amino-4H-pyrans was accomplished with iodobenzene diacetate (IBD) and N-chlorosuccinimide (NCS) reagents in alcoholic medium. 2-Amino-4H-pyrans undergo geminal dialkoxylation with the migration of an amino group (1a,b, 2a–i, 3a,b, and 4) in IBD, whereas with NCS addition of both chlorine and alkoxy groups takes place across the chromene double bond (6a–i).
用氨基乙酸碘代苯(IBD)和N-氯代琥珀酰亚胺(NCS)试剂可完成2-氨基-4 H-吡喃的氧化双官能化反应。2-氨基-4 H-吡喃在IBD中经历一个双胺基团的迁移(1a,b,2a – i,3a,b和4),而在NCS中,氯和烷氧基同时发生色烯双键(6a – i)。