Cyclic Boron Derivatives of Biurets [1]

Jacek Bielawski 1 , Kurt Niedenzu 1 , Annelore Weber 1  and Wilhelm Weber 1
  • 1 Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, USA


Several 1,3,5-triaza-2-boracyclohexa-4,6-diones have been prepared by condensation reactions of boranes with biurets; N-methylated species could be characterized by their 1H, 11B and 13C NMR spectra. Some data are also reported on bicyclic bis(N,N',N"- trimethylbiuret-1,5-diyl)borate(l-) salts and on a betaine consisting of two N,N',N"-trimethylbiuret moieties bonded to a central four-coordinate boron atom.

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Zeitschrift für Naturforschung B is an international scientific journal which publishes original papers, microreviews, and letters from all areas of inorganic chemistry, solid state chemistry, coordination chemistry, molecular chemistry, and organic chemistry.