Fossey JS, Matsubara R, Vital P, Kobayashi S. A C2-symmetric nickel diamine complex as an asymmetric catalyst for enecarbamate additions to butane-2,3-dione.
Org Biomol Chem 2005;
3:2910-3. [PMID:
16186919 DOI:
10.1039/b505404d]
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Abstract
Butane-2,3-dione was activated towards nucleophilic addition of enecarbamates by a series of metal triflate complexes of a C2-symmetric diamine to give stereogenic, aldol-like, t-alcohols, a novel nickel(II) triflate complex was identified as a good catalyst for this asymmetric transformation, and an aquo nickel(II) complex was identified by XRD techniques.
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