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Novel and efficient one pot condensation reactions between ketones and aromatic alcohols in the presence of CrO3 producing alpha,beta-unsaturated carbonyl compounds
We report a new, effective and simple method for preparing alpha,beta-unsaturated carbonyl compounds by reacting ketones and aromatic alcohols at 56 C in the presence of CrO3 (CrO3 acts as an oxidant and also a catalyst) for around 10 h. The condensation reactions occurred effectively among a wide combination of ketones and alcohols. The procedure is simple and the yields can be high up to 98%. And a probable mechanism is proposed.
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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate