Synthesis of enantioenriched N-aryl-2-pyridones with chiral C-N axes by rhodium-catalyzed [2+2+2] cycloaddition of alkynes with isocyanates.

[摘要]：Enantioenriched N-aryl-2-pyridones with axially chiral C-N bonds were prepd. by a cationic rhodium(I)-BINAP or tol-BINAP-catalyzed enantioselective [2+2+2] cycloaddn. of alkadiynes with ortho-substituted Ph isocyanates.

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