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Autori: C. Cismaş, A. Terec, S. Mager and *I. Grosu
Editorial: Current Organic Chemistry, 9, p.1287-1314, 2005.
The data concerning the structure, synthesis and reactivity of six-membered ring spiranes exhibiting carbocycles and heterocycles with oxygen atoms are reviewed. The structural aspects are discussed using specific stereogenic elements and stereochemistry descriptors for spiranes with six-membered rings. The data are supported by high field NMR investigations and molecular structures obtained by X-ray diffractometry. The general procedures and access to spiranes with carbocycles and with heterocycles with oxygen are commented.
Cuvinte cheie: helical chirality, axial chirality, virtual tricoordinated pseudochiral centre, flexible, semiflexible and anancomeric spiranes, X-ray diffractometry, variable temperature NMR.