Novel 1,5,3-dithiazepanes: three-component synthesis, stereochemistry, and fungicidal activity
作者:V. R. Akhmetova、N. N. Murzakova、T. V. Tyumkina、G. R. Khabibullina、I. S. Bushmarinov、L. F. Korzhova、N. F. Galimzyanova
DOI:10.1007/s11172-012-0301-5
日期:2012.11
Three-component heterocyclization of hydrazine with formaldehyde and ethane-1,2-dithiol gave previously unknown 3,3′-bi(1,5,3-dithiazepane). Its stereochemistry was determined by X-ray diffraction. The reaction with higher aliphatic aldehydes RCHO (R = Me, Et, Prn, and Bun) yielded 2,4-dialkyl-3-alkylideneamino-1,5,3-dithiazepanes. The stereochemistry of the latter was determined by 1H and 13C NMR spectroscopy and confirmed by quantum chemical calculations. Heterocyclizations of phenylhydrazine and benzylhydrazine with ethane-1,2-dithiol gave 3-amino-1,5,3-dithiazepanes only with CH2O and MeCHO as the aldehyde component. 3,3′-Bi(1,5,3-dithiazepane) and its N-adduct with MeI were found to exhibit fungicidal activity against microscopic fungi.
氢化肼与甲醛和乙烯-1,2-二硫醇的三组分杂环化反应生成了之前未知的3,3'-双(1,5,3-二噻唑烷)。其立体化学通过X射线衍射确定。与更高的脂肪醛RCHO(R = 甲基、乙基、丙基和丁基)的反应产生了2,4-二烷基-3-烷基亚氨基-1,5,3-二噻唑烷。后者的立体化学通过1H和13C NMR光谱法确定,并通过量子化学计算进行了确认。与乙烯-1,2-二硫醇的苯基氢肼和苄基氢肼的杂环化只在甲醛和乙醛作为醛组分时产生3-氨基-1,5,3-二噻唑烷。3,3'-双(1,5,3-二噻唑烷)及其与甲基碘的N-加成物显示出对微型真菌的杀菌活性。