Heterocyclization of Enediynes Promoted by Sodium Azide: A Case of Ambiguity of X-ray Data and Structure Revision
作者:Anna V. Gulevskaya、Alexander S. Tyaglivy、Alexander F. Pozharskii、Julia I. Nelina-Nemtseva、Dmitry V. Steglenko
DOI:10.1021/ol500125j
日期:2014.3.21
It has been shown that contrary to the literature data the tandem cyclization of (Z)-1-aryl-3-hexen-1,5-diynes promoted by sodium azide results in the formation of the corresponding [1,2,3]triazolo[1,5-a]pyridines, not 1H-benzotriazole derivatives. Apparently, incorrect structure elucidation made by previous investigators originates from misinterpretation of X-ray data. A number of new transformations
已经表明,与文献数据相反,叠氮化钠促进的(Z)-1-芳基-3-己烯-1,5-二炔串联环化导致形成相应的[1,2,3]三唑[1,5- a ]吡啶,而不是1 H-苯并三唑衍生物。显然,先前研究人员做出的不正确的结构解释是由于对X射线数据的错误解释造成的。讨论了这种类型的许多新转化以及X射线和NMR实验。