Synthesis, crystal structure, and interconversions of new N-aryl-1,3,5-dithiazinanes, 1,3,5-thiadiazinanes, and 1,5-dithia-3,7-diazacyclooctanes
作者:V. R. Akhmetova、Z. T. Niatshina、G. R. Khabibullina、I. S. Bushmarinov、A. O. Borisova、Z. A. Starikova、L. F. Korzhova、R. V. Kunakova
DOI:10.1007/s11172-010-0196-y
日期:2010.5
mixture in the synthesis of N-aryl-substituted 1,3,5-dithiazinanes, 1,3,5-thiadiazinanes, and 1,5-dithia-3,7-diazacyclooctanes has been studied depending on the type and mutual arrangement of substituents in the starting anilines, ratio of reagents, temperature, and reaction time. Conformation of the synthesized heterocycles in crystal has been found by X-ray diffraction. Interconversion of the heterocycles
苯胺与 CH2O-H2S硫甲基化混合物在合成 N-芳基取代的 1,3,5-二噻嗪、1,3,5-噻二嗪和 1,5-二噻-3,7-二氮杂环辛烷中的多组分反应的化学选择性已根据起始苯胺中取代基的类型和相互排列、试剂比例、温度和反应时间进行了研究。已通过 X 射线衍射发现晶体中合成杂环的构象。杂环的相互转化显示了 N-芳基-1,3,5-二噻嗪烷的稳定性。
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作者:S. R. Khafizova、V. R. Akhmetova、R. V. Kunakova、U. M. Dzhemilev
DOI:10.1023/a:1026021124424
日期:——
Primary aromatic amines were thiomethylated by formaldehyde and hydrogen sulfide. N-Substituted 1,3-thiazetidines, 4,5-dihydro-1,3,5-dithiazines, 3,4,5,6-tetrahydro-2H-1,3,5-thiadiazines, and 4,5-dihydro-1,3,5-oxathiazines were prepared for the first time starting from meta- and para-toluidines, meta-, para-, and ortho-anisidines, and para-xylidine. Amines characterized by higher mobility of hydrogen atoms produced previously unknown four-membered thiazetidines, whereas amines characterized by lower mobility of hydrogen atoms gave six-membered thiadiazines. The sorption properties with respect to silver were studied for the compounds, which were prepared from p-toluidine and p-anisidine.