ChemInform Abstract: 2, 4‐Dinitrophenol‐Catalyzed α‐C(sp3)—H and C(sp)‐H Bond Functionalization of Cyclic Amines and Alkynes: Highly Regio‐/Diastereoselective Synthesis of α‐Alkynyl‐3‐amino‐2‐oxindoles. Issue 49 (17th November 2016)