Clefts in Simple Acyclic Organic Molecules. Correlated Stereodynamics of N-tert-Alkylbenzylamines Studied by Dynamic NMR Spectroscopy, X-ray Diffraction, and Molecular Mechanics Calculations

Article abstract of DOI:10.1021/jo00005a016

In N-tert-butyl-N-neopentylbenzylamine (1), the slowing of four processes can be observed in the NMR spectrum at low temperature.The rate constant for 120 deg rotation of the N-tert-butyl group is three times that for 180 deg rotation of the phenyl group