Abstract
Various indoles and carbazoles were synthesized from o‐alkenyl anilines and o‐aryl anilines by the β‐C(sp2)‐H bond amination cyclization without any oxidants or hydrogen acceptors. Likewise, employing o‐alkyl anilines as substrates, indole products are also obtained by the β‐C(sp3)‐H bond amination cyclization, and dehydrogenation. In this cross‐dehydrogenative coupling, many different functional groups are tolerated, and hydrogen gas is the only by‐product, thereby providing an intrinsically waste‐free approach for the synthesis of indoles and carbazoles.
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