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Synlett 2009(8): 1331-1335  
DOI: 10.1055/s-0028-1088131
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

Synthesis of 1,1-Organodiboronates via Rh(I)Cl-Catalyzed Sequential Regioselective Hydroboration of 1-Alkynes

Kohei Endo*, Munenao Hirokami, Takanori Shibata*
Department of Chemistry and Biochemistry, Advanced School of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
Fax: +81(3)52863487; e-Mail: kendo@aoni.waseda.jp; e-Mail: tshibata@waseda.jp;
Further Information

Publication History

Received 21 January 2009
Publication Date:
08 April 2009 (online)

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Abstract

A Rh(I)Cl-DPPB-complex-catalyzed sequential hydro­boration of aryl alkynes and aliphatic alkynes was achieved. The ­reaction proceeded with almost perfect regioselectivity to afford 1,1-organodiboronate compounds in moderate to good yield.

Key words

rhodium - hydroborations - alkynes - regioselectivity

    Reference and Notes

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