Study of the reaction of chalcone analogs of dehydroacetic acid and o-aminothiophenol: synthesis and structure of 1,5-benzothiazepines and 1,4-benzothiazines
作者:Om Prakash、Ajay Kumar、Anil Sadana、Richa Prakash、Shiv P. Singh、Rosa M. Claramunt、Dionisia Sanz、Ibon Alkorta、José Elguero
DOI:10.1016/j.tet.2005.03.035
日期:2005.7
reaction of DHA and aromatic (or heteroaromatic) aldehydes, with o-aminothiophenol results in the formation of 1,5-benzothiazepines and/or 1,4-benzothiazines depending upon the reaction conditions and structure of the aldehydes. The products were characterized by the combined use of multinuclear 1D and 2D NMR and GIAO/DFT calculations of 1H, 13C and 15N chemical shifts. The tautomerism of these compounds
通过DHA与芳族(或杂芳族)醛与邻氨基苯硫酚反应获得的α,β-不饱和羰基化合物,根据反应的不同,会形成1,5-苯并噻氮杂和/或1,4-苯并噻嗪醛的条件和结构。产品的特点是结合使用多核1D和2D NMR以及GIAO / DFT计算的1 H,13 C和15 N化学位移。测定了这些化合物在溶液中的互变异构,它们具有环外CC双键。