Organocatalytic asymmetric synthesis of polyfunctionalized 3-(cyclohexenylmethyl)-indoles via a quadruple domino Friedel–Crafts-type/Michael/Michael/aldol condensation reaction
A new organocatalyticquadruple domino Friedel-Crafts-type/Michael/Michael/aldol condensation reaction has been developed. In this one-pot multi-component process acrolein, various indoles and nitroalkenes are used as starting materials. The diphenylprolinol TMS-ether catalysis provides a straightforward and efficient entry to 3-(cyclohexenylmethyl)-indoles bearing three stereogenic centers in moderate
已经开发了一种新的有机催化四重多米诺骨牌-弗瑞德-克来福特型/迈克尔/迈克尔/醛醇缩合反应。在这种一锅多组分法丙烯醛中,各种吲哚和硝基烯烃被用作起始原料。二苯基脯氨醇TMS-醚催化可直接有效地进入带有3个立体异构中心的3-(环己烯基甲基)-吲哚,产率中等至优异(23-82%),且立体选择性优异(dr = 91:9至> 95:5, ee = 94至> 99%)。