Friedlander quinoline synthesis catalyzed by M(HSO4)n (M = Al, Mg, Ca) under solvent-free conditions.

[摘要]：Polysubstituted quinolines, e.g., I, were synthesized from the 2-aminobenzophenone, ethylacetoacetate or ketones in the presence of metal hydrogen sulfates [M(HSO4)n] in good to high yields at 70 癈 under solvent-free conditions.

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