Abstract
A series of diverse polyfunctionalized quinolines were easily prepared in excellent yields via a Friedlander reaction of o-aminoaryl ketone or o-aminoaryl aldehyde with α-methylene ketones using lithium triflate as an expeditious catalyst under solvent free conditions. The protocol provides a practical and straightforward approach toward highly functionalized quinoline derivatives in excellent yields. The catalyst is easily recoverable and less sensitive to moisture, which makes this protocol more advantageous.
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This research work was supported by the Second Phase of Brain Korea (BK21) Program.
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Atar, A.B., Dindulkar, S.D. & Jeong, Y.T. Lithium triflate (LiOTf): a highly efficient and reusable catalytic system for the synthesis of diversified quinolines under neat conditions. Monatsh Chem 144, 695–701 (2013). https://doi.org/10.1007/s00706-012-0906-2
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DOI: https://doi.org/10.1007/s00706-012-0906-2