作者:V. R. Akhmetova、R. R. Khairullina、G. R. Nadyrgulova、R. V. Kunakova、U. M. Dzhemilev
DOI:10.1134/s1070428008020036
日期:2008.2
Multicomponent heterocyclization of aliphatic amides with H2S and CH2O (1:3:2) in water-organic solvent mixture in the presence of BuONa led to the formation of 1,3,5-dithiazinane in high yield (30–95%) and with high selectivity (100%). Under these conditions benzamide gave 3,5-dibenzoyl-1,3,5-thiadiazinane in 74% yield, whereas due to ortho-effect the acetylsalicylamide with H2S and CH2O in a system BuOH-H2O without BuONa formed N-acetylsalicyloyl-1,3,5-dithiazinane (80%). Heterocyclization of α-aminosuccinic acid monoamide depending on the H2S and CH2O concentration occurred either at one or both NH2 yielding respectively mono-or bisdithiazinanes.
在BuONa存在下,脂肪胺与H2S和CH2O(1:3:2)在水-有机溶剂混合物中进行多组分异环化反应,形成了高产率(30-95%)和高选择性(100%)的1,3,5-二硫氮杂环烷。在这些条件下,苯甲酰胺生成了74%产率的3,5-二苯甲酰基-1,3,5-噻二氮杂环烷,而由于邻效应,乙酰水杨酸胺在BuOH-H2O体系中与H2S和CH2O反应生成了80%的N-乙酰水杨酰基-1,3,5-二硫氮杂环烷。α-氨基琥珀酸单酰胺的异环化取决于H2S和CH2O的浓度,可以发生在一个或两个NH2上,分别生成单或双二硫氮杂环烷。