Rh(III)-Catalyzed Domino [4 + 2] Annulation/Aza-Michael Addition of <i>N</i>-(Pivaloyloxy)benzamides with 1,5-Enynes via C–H Activation: Synthesis of Functionalized Aromathecins
Reported herein are the Rh(III)-catalyzedcascadeannulation reactions of N-(pivaloyloxy)benzamides with 1,5-enynes to access diversely substituted aromathecin derivatives involving C–H activation. The developed procedure offers an efficient synthetic tool for the assembly of a wide range of N-(pivaloyloxy)benzamides and 1,5-enynes with good atom economy and functional group tolerance. The key reactions