Pian Ji-Xin, He Lin, Du Guang-Fen, Guo Hao, Dai Bin
School of Chemistry and Chemical Engineering, Shihezi University , Xinjiang, Uygur Autonomous Region 832000, China.
J Org Chem. 2014 Jun 20;79(12):5820-6. doi: 10.1021/jo5003399. Epub 2014 Jun 3.
A tandem reaction of arynes with α- or β-amino ketones has been revealed. Arynes react with β-amino ketones through a cascade insertion-cyclization process to afford N-aryl tetrahydroquinolines in good yield with excellent anti-selectivity. Meanwhile, the coupling of arynes with α-amino ketones produces multisubstituted indolines in high yield with syn-selectivity. A quaternary carbon center can be constructed in this process, and the reaction can be easily scaled up.
已揭示了芳炔与α-或β-氨基酮的串联反应。芳炔通过级联插入-环化过程与β-氨基酮反应,以良好的产率和优异的反式选择性得到N-芳基四氢喹啉。同时,芳炔与α-氨基酮的偶联以高产率和顺式选择性生成多取代吲哚啉。在此过程中可以构建季碳中心,并且该反应可以很容易地扩大规模。