AI Article Synopsis

  • A series of new alkynyl-functionalized diarylbis(dimethylamino)diboranes(4) were created using a salt metathesis method, which allowed for the incorporation of alkynyl groups.
  • The alkynyl groups underwent hydroboration and reacted with monohydroboranes, resulting in distinct boryl-appended diborane(4) compounds, while dihydroboranes caused the formation of oligomeric species with B-B bonds.
  • The resulting oligomers, which can have up to ten repeating units, are soluble in organic solvents and show promising stability in the air, with their properties analyzed through various spectroscopic and chromatographic techniques.

Article Abstract

A number of novel alkynyl-functionalized diarylbis(dimethylamino)diboranes(4) are prepared by salt metathesis, and the appended alkynyl groups are subjected to hydroboration. Their reactions with monohydroboranes lead to discrete boryl-appended diborane(4) species, while dihydroboranes induce their catenation to oligomeric species, the first known examples of well-characterized macromolecular species with B-B bonds. The oligomeric species were found to comprise up to ten repeat units and are soluble in common organic solvents. Some of the oligomeric species have good air stability and all were characterized by NMR and vibrational spectroscopy and size-exclusion chromatography techniques.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9292976PMC
http://dx.doi.org/10.1002/chem.202103366DOI Listing

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