Abstract
Abstract13C and 1H NMR parameters were measured for isoproterenol in solution. Spin‐lattice relaxation rates were considered and C‐H and H‐H J couplings were determined. The t rotamer was shown to occur in a much greater abundance than the two g rotamers. Dynamics in solution were interpreted in terms of a nearly isotropic motion of the α‐hydroxyphenethyl moiety and of a high degree of flexibility of the isopropyl moiety, Relevant distances and dipolar connectivities were measured and used to build up a Dreiding model of the most probable conformation.
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