Conformational effects of 1,5,9-substitution in symmetric bicyclo[3.3.1]nonane analoguesстатья
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Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Аннотация:The high-level ab initio calculations on several derivatives of bicyclo[3.3.1]nonane, 1-aza- and 1,5-diazabicyclo[3.3.1]nonanes show the ‘double chair’ (CC) conformer as optimal for all of them, dominating over the ‘boat–chair’ (BC) form. Conformational effects of several substitution types involving positions 1, 5 and 9 are quantified, and their values are found rather transferable.