Synlett 2014; 25(6): 795-798
DOI: 10.1055/s-0033-1340847
© Georg Thieme Verlag Stuttgart · New York

Phosphoric Acid Bridged Cobalt Bis(dicarbollide) Ion as a Highly Efficient Catalyst for the Organocatalytic Hydrogenation of Ketimines

Takahiko Akiyama*a, Kodai Saitoa, Slawomir Janczakb, Zbigniew J. Lesnikowski*b
  • aDepartment of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan   Fax: +81(3)59921029   Email:
  • bInstitute of Medical Biology, Polish Academy of Sciences, Laboratory of Molecular Virology and Biological Chemistry, 106 Lodowa St., Łódź 93-232, Poland   Fax: +48(42)2723630   Email:
Further Information

Publication History

Received: 31 December 2013

Accepted after revision: 28 January 2014

Publication Date:
05 March 2014 (eFirst)


The high-yield reduction of aromatic ketimines into amines by using a novel catalyst based on a metallacarborane structure, 8,8′-μ-phosphate[(1,2-dicarba-closo-undecaborane)-3,3′-cobalt(-1)(1′,2′-dicarba-closo-undecaborane)] acid, is described.