Accessing [6,6,5,6] tetracyclic indeno-quinolines via photomediated cascade reaction of electron-rich 1,7-enynes

Synthesisof various sulfonyl and trifluoromethyl decorated tetracyclic indeno-quinolines from 1,7-enynes via a cascade radical addition-cyclization-aromatization sequence is presented. The reaction shows broad substrate scope with good functional group tolerance on...