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Prof. Dr. Yoichiro Kuninobu, Kanae Yamauchi, Naoya Tamura, Takayuki Seiki and Prof. Dr. Kazuhiko Takai Rhodium-Catalyzed Asymmetric Synthesis of Spirosilabifluorene Derivatives Angewandte Chemie International Edition 52

Article first published online: 13 DEC 2012 | DOI: 10.1002/anie.201207723

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Si goes chiral: Treatment of a bis(biphenyl)silane with a catalytic amount of a rhodium complex gave a spirosilabifluorene bearing a quaternary silicon atom. By using a rhodium catalyst with a chiral phosphine ligand (see scheme), asymmetric dehydrogenative cyclization proceeded to give chiral derivatives in good yields and enantioselectivities.

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