Synthesis of Tetrahydro-1<i>H</i>-indeno[1,2-<i>b</i>]pyridine via Cascade Cyclization and Friedel–Crafts Reaction
作者:Upasana Borthakur、Madhurjya Borah、Manash J. Deka、Anil K. Saikia
DOI:10.1021/acs.joc.6b00988
日期:2016.10.7
A convenient protocol has been established for the synthesis of 1-tosyl-2,3,4,5-tetrahydro-1H-indeno[1,2-b]pyridine via cascade cyclization and Friedel–Crafts reaction of 4-methyl-N-(pent-4-yn-1-yl)benzenesulfonamides and aldehydes in good yields. The methodology has been used for the total synthesis of the antidepressant agent (±)-5-phenyl-2,3,4,4a,5,9b-hexahydro-1H-indeno[1,2-b]pyridine.
已经建立了通过级联环化和4-甲基-N的Friedel-Crafts反应合成1-tosyl-2,3,4,5-四氢-1 H-茚并[1,2- b ]吡啶的简便方法-(pent-4-yn-1-yl)苯磺酰胺和醛收率高。该方法已用于抗抑郁药(±)-5-苯基-2,3,4,4a,5,9b-六氢-1 H-茚并[1,2- b ]吡啶的全合成。