Add time:07/18/2019 Source:sciencedirect.com
An efficient synthetic route to non-racemic chiral 4-alkyl-1,2,3,4-tetrahydroquinoline is described. (4R)-4-Ethyl-1,2,3,4-tetrahydroquinoline was obtained by the organoaluminum promoted modified Beckmann rearrangement involving the oxime sulfonate of (3R)-3-ethylindan-1-one. The required optically active indanone was obtained via an asymmetric conjugate reduction of (E)-ethyl 3-phenylpent-2-enoate.
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