The room temperature hydroboration reaction between thexylborane and p-R-C6H6-CN (R = CH3 or OCH3) in THF or toluene results in the formation of a tetrasubstituted aldiminoborane dimer with a rare preference for the air stable trans, syn stereoisomer. Structure elucidation and complete assignment of the resonances in the 1H and 13C{1H} NMR spectra were completed via melting point, FTIR spectroscopy and NMR spectroscopy and B3LYP/6-311+G(2d,p) calculations.

Computational study of aldiminoborane dimers with a rare preference for trans-syn stereoisomer formation

ACS Spring Meeting 2021

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