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Updated: Jun 16, 2025
Synthesis of 1,2-Azaborines and the Preparation of Their Protein Complexes with T4 Lysozyme Mutants
Published on: March 25, 2017
Boron-chalcogen heterocycles and linear tetraboranes from a cyclic tetra(amino)tetraborane
Eva Beck1,2, Diana Bröllos1,2, Ivo Krummenacher1,2
1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg, Germany.
Abstract:
While small carbocyclic rings have long been recognized as pivotal building blocks in chemistry, their all-boron counterparts have remained largely unexplored. In this work, we present a detailed account of the functionalization reactivity of our cyclic tetraborane B4(NCy2)4 (Cy = cyclohexyl) encompassing both ring-expansion and ring-opening reactions. Specifically, diphenyl dichalcogenides effect ring expansion to five-membered B4E rings (E = S, Se, Te), while halogenating agents induce ring opening to generate linear tetraboranes with halide end groups. These transformations reveal reactivity patterns reminiscent of strained organic ring systems, thus highlighting the cyclic tetraborane's potential as a versatile precursor for synthesizing intricate boron-rich architectures.
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