1,1-Dibenzyl-2,2-dimethylpropan-1-ol 1 shows a coalescence phenomenon in its 13C solid state CP MAS NMR spectrum consistent with slowing of rotation of the tert-butyl group about the C(1)–C(2) bond with an activation energy of 13.1 kcal mol–1(1 cal = 4.184 J), 4 kcal mol–1 higher than in solution.
Frank. G. Riddell, S. Arumugam and J. E. Anderson, J. Chem. Soc., Chem. Commun., 1991, 1525 DOI: 10.1039/C39910001525
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