Correlation between 13C and 17O chemical shifts and torsional strain in spiroacetals
作者:Jorge Antonio Guerrero-Alvarez、Armando Ariza-Castolo
DOI:10.1016/j.tetlet.2006.11.162
日期:2007.1
The relationship between the 13C and 17O NMR chemical shifts and the dihedral energies (non-bonding interactions) of 1,4-dioxaspiro[4.4]nonane, 1,4-dioxa- and 6,10-dioxaspiro[4.5]decane, 1,4-dioxa- and 6,11-dioxaspiro[4.6]undecane, 1,5-dioxaspiro[5.5]undecane, 1,5-dioxa and 7,12-dioxaspiro[5.6]dodecane and 1,6-dioxaspiro[6.6]tridecane were analyzed. These data showed correlation of the non-bonding
13 C和17 O NMR化学位移与1,4-二氧杂螺[4.4]壬烷,1,4-二氧杂-和6,10-二氧杂螺[4.5]癸烷的二面能(非键相互作用)之间的关系, 1,4-二ox杂和6,11-二ox杂螺[4.6]十一烷,1,5-二ox杂螺[5.5]十一烷,1,5-二ox杂和7,12-二ox杂螺[5.6]十二烷和1,6-二ox杂螺[6.6分析了十三烷。这些数据显示了非键相互作用与螺碳的化学位移的相关性,以及13 C和17 O之间的线性关系。