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A variety of 5‐indo‐1‐yl pyran‐2‐ones with an N−C axis were prepared via a carbene‐catalyzed oxidative [3+3] annulation of indole‐1‐pyruvate esters and enals. Asymmetric construction of pyran‐2‐one ring from enals ensures the realization of this strategy. The resulting compounds were converted into axially chiral N‐arylindoles with an N−C axis via a cycloaddtion aromatization.
Li metal anode has been recognized as the most promising anode for its high theoretical capacity and low reduction potential. But its large‐scale commercialization is hampered because of the infinite volume expansion, severe side reactions, and uncontrollable dendrite formation. Herein, the self‐supporting porous lithium foam anode is obtained by a melt foaming method. The adjustable interpenetrating...