Stereochemistry of seven-membered heterocycles: XLVII. Synthesis, NMR, XRD, and theoretical investigation of monosulfoxides of (Z)-4,7-dihydro-1λ4,3-dithiepine series
作者:A. N. Galyautdinova、R. M. Vafina、O. N. Kataeva、O. A. Lodochnikova、S. G. Gnevashev、O. I. Gnezdilov、V. V. Gavrilov、Yu. G. Shtyrlin、G. A. Chmutova、E. N. Klimovitskii
DOI:10.1134/s107042801002017x
日期:2010.2
acid the corresponding 4,7-dihydro-1λ4,3-dithiepine 1-oxides were synthesized in ∼85% yield. A complete assignment of signals in the 1H and 13C NMR spectra of the compounds obtained was established. According to XRD analysis the seven-membered heterocycles crystallized in conformations chair or boat. The calculations by DFT method in the B3LYP/6-31G(d,p) version showed the possibility of conformational
通过的(氧化Ž)-4,7-二氢-1,3- dithiepines与间氯过苯甲酸相应的4,7-二氢1λ 4,3-dithiepine 1氧化物是在〜85%产率合成。在获得的化合物的1 H和13 C NMR光谱中建立了信号的完整分配。根据XRD分析,七元杂环以椅子或船形结晶。在B3LYP / 6-31G(d,p)版本中通过DFT方法进行的计算表明,这些形式在气相中可能发生构象平衡。