Reactions of 2-(α-Haloalkyl)thiiranes with Nucleophilic Reagents: IV. Alkylation of Sulfonamides with 2-Chloromethylthiirane. Synthesis and Properties of 3-(Arylamino)thietanes
作者:V. V. Sokolov、A. N. Butkevich、V. N. Yuskovets、A. A. Tomashevskii、A. A. Potekhin
DOI:10.1007/s11178-005-0288-6
日期:2005.7
Alkylation of primary and secondary sulfonamides with 2-chloromethylthiirane in the presence of alkali gives the corresponding N-(thiiran-2-ylmethyl)- and/or N-(thietan-3-yl)sulfonamides. The selectivity of the process depends on the solvent: in water, thiirane-thietane rearrangement products are formed exclusively, while ethanol favors Ad-E reaction leading to thiiranylmethyl derivatives. A procedure has been proposed for the synthesis of 3-(arylamino)thietanes which undergo selective acylation at the nitrogen atom. The possibility for synthesizing analogous derivatives of thietane 1-oxide and thietane 1,1-dioxide is considered.
初级和次级磺胺与2-氯甲基噻烷在碱性环境下进行烷基化反应,可以得到相应的N-(噻烷-2-基甲基)-和/或N-(噻烷-3-基)磺胺。该过程的选择性取决于溶剂:在水中,专门形成噻烷-噻烯重排产物,而在乙醇中则更倾向于Ad-E反应,生成噻烷基甲基衍生物。已经提出了一种合成3-(芳基氨基)噻烷的程序,这些化合物在氮原子上容易进行选择性酰化。还考虑了合成噻烷1-氧化物和噻烷1,1-二氧化物的类似衍生物的可能性。