Structure elucidation of configurational isomers of nitrile‐substituted spirocyclopropyloxindoles by NMR spectroscopy, molecular modeling, and X‐ray crystallography

Study of E/Z isomerization of (arylamino)methylidenefuran‐2(3H)‐ones by 1H, 13C, 15N spectroscopy and DFT calculations in different solvents

“…Recently, different nuclear magnetic resonance (NMR) methods including, generally, 1 H and 13 C NMR spectroscopy as well as COSY, HMBC, and nuclear Overhauser spectroscopy (NOESY) experiments were successfully applied for the studying of the conformational and configurational peculiarities of some heterocyclic compounds and their derivatives from various series including benzoquinonimines, pyrroles, 1 H –imidazoles, morphinan‐6‐one, 2 H ‐pyran‐2‐ones, hydroquinolinones, and spirocyclopropyloxindoles . The methods were also applied for the elucidation of structural details of relatively small organic compounds as well as their complexes with metals, and for the more complex compounds such as stilbene‐based Fischer base analog of leuco‐TAM .…”