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  • Title: Rhodium-catalyzed complete regioselective intermolecular cross-cyclotrimerization of aryl ethynyl ethers and nitriles or isocyanates at room temperature.
    Author: Komine Y, Tanaka K.
    Journal: Org Lett; 2010 Mar 19; 12(6):1312-5. PubMed ID: 20184341.
    Abstract:
    We have established that a cationic rhodium(I)/H(8)-BINAP complex catalyzes the complete regioselective intermolecular cross-cyclotrimerization of aryl ethynyl ethers and nitriles or isocyanates leading to 2,4-diaryloxypyridines or 4,6-diaryloxy-2-pyridones at room temperature.
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