CAN 141:224907 AN 2004:566825 CAPLUS (COPYRIGHT (C) 2008 ACS ON SCIFINDER (R)) ABSTRACT THE BARRIERS FOR INTERCONVERTING THE CONFORMATIONAL ENANTIOMERS (STEREOLABILE ATROPISOMERS) OF PYRIDINE-SUBSTITUTED ADAMANTANE DERIVS. HAVE BEEN DETD. BY DYNAMIC 13C NMR SPECTROSCOPY. THE TREND OF THESE VALUES PARALLELS THAT ANTICIPATED BY MM CALCNS. IN AT LEAST ONE CASE, THE COMPUTED STRUCTURE WAS FOUND TO AGREE WITH THAT OBTAINED BY SINGLE-CRYSTAL X-RAY DIFFRACTION. IN ADDN., IT HAS BEEN POSSIBLE TO ACHIEVE A PHYS. SEPN. OF A PAIR OF THESE STEREOLABILE ATROPISOMERS AT -60 °C BY MEANS OF THE ENANTIOSELECTIVE CRYOGENIC HPLC TECHNIQUE.
Conformational Studies by Dynamic NMR. 100. Enantiomerization Process of Stereolabile Atropisomers in Pyridine-Substituted Adamantane Derivatives.
CASARINI, Daniele;
2004-01-01
Abstract
CAN 141:224907 AN 2004:566825 CAPLUS (COPYRIGHT (C) 2008 ACS ON SCIFINDER (R)) ABSTRACT THE BARRIERS FOR INTERCONVERTING THE CONFORMATIONAL ENANTIOMERS (STEREOLABILE ATROPISOMERS) OF PYRIDINE-SUBSTITUTED ADAMANTANE DERIVS. HAVE BEEN DETD. BY DYNAMIC 13C NMR SPECTROSCOPY. THE TREND OF THESE VALUES PARALLELS THAT ANTICIPATED BY MM CALCNS. IN AT LEAST ONE CASE, THE COMPUTED STRUCTURE WAS FOUND TO AGREE WITH THAT OBTAINED BY SINGLE-CRYSTAL X-RAY DIFFRACTION. IN ADDN., IT HAS BEEN POSSIBLE TO ACHIEVE A PHYS. SEPN. OF A PAIR OF THESE STEREOLABILE ATROPISOMERS AT -60 °C BY MEANS OF THE ENANTIOSELECTIVE CRYOGENIC HPLC TECHNIQUE.| File | Dimensione | Formato | |
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