Synthesis of pyranopyrazoles with a chiral quaternary carbon stereocenter via copper-catalyzed enantioselective [3 + 3] cycloaddition.
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DOI: 10.1039/d1cc07058d
Abstract: A copper-catalyzed enantioselective [3 + 3] cycloaddition of propargyl carbonates and pyrazolones has been disclosed. This reaction provided an efficient route to synthesize pyranopyrazoles containing a chiral quaternary carbon stereocenter in good yields with good… read more here.
Keywords: carbon stereocenter; enantioselective cycloaddition; chiral quaternary; quaternary carbon ... See more keywords