A novel protocol of rhodium-catalyzedtandem C–H annulation of aldehyde and aniline with diazonaphthalen-1(2H)-one via transient directing group strategy and sequential nucleophilic substitution has been demonstrated in moderate to excellent yields. This reaction proceeds smoothly via intramolecular cyclization to form 6H-benzo[c]chromen-6-ol and is followed by nucleophilic substitution of para-carbon
一种新的铑催化串联 C-H 环化醛和苯胺与 diazonaphthalen-1( 2H )-one 通过瞬时导向基团策略和顺序亲核取代的新方案已被证明具有中等至优异的产率。该反应通过分子内环化顺利进行,形成6 H-苯并[ c ]色烯-6-醇,然后苯胺的对碳亲核取代,构建6-芳基-6 H-苯并[ c ]色烯衍生物。通过串联 C-H 环化一锅法合成了一系列 6-aryl-6 H-苯并[ c ]色烯。