Synthesis of Quinoline‐3‐carboxylates by a Rh(II)‐Catalyzed Cyclopropanation‐Ring Expansion Reaction of Indoles with Halodiazoacetates.
2016
In this letter, we report a novel synthesis of ethyl quinoline-3-carboxylates from reactions between a series of indoles and halodiazoacetates. The formation of the quinoline structure is probably the result of a cyclopropanation at the 2- and 3-positions of the indole followed by ring-opening of the cyclopropane and elimination of H–X.
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