Enantioselective Synthesis of Axially Chiral Figure-Eight Spirocycloparaphenylenes via Rh-Catalyzed Intermolecular [2 + 2 + 2] Cycloaddition.
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DOI: 10.1021/acs.orglett.3c00895
Abstract: We have achieved the enantioselective synthesis of axially chiral figure-eight spiro[9.9]cycloparaphenylene (CPP) tetracarboxylates with up to 75:25 er via the cationic Rh(I)/(R)-H8-BINAP complex-catalyzed chemo-, regio-, and enantioselective intermolecular double [2 + 2 + 2] cycloaddition… read more here.
Keywords: enantioselective synthesis; figure eight; axially chiral; synthesis axially ... See more keywords