Mechanosynthesis of Odd-Numbered Tetraaryl[n]cumulenes

Angew Chem Int Ed Engl. 2019 Sep 9;58(37):12945-12949. doi: 10.1002/anie.201905670. Epub 2019 Jul 17.

Abstract

A mechanochemical synthesis of one-dimensional carbon allotrope carbyne model compounds, namely tetraaryl[n]cumulenes (n=3, 5) was realized. Central for the mechanosynthesis of the cumulenic carbon nanostructures were the development of a mechanochemical Favorskii alkynylation-type reaction and the implementation of a solvent-free, acid-free reductive elimination with tin(II) chloride by ball milling.

Keywords: ball milling; calcium carbide; cumulenes; mechanochemistry.