Oxocarbons and Related Compounds; Part 16.1 Synthesis of 3-Alkylthio- and 3-Arylthio-3-cyclobutene-1,2-diones (S-Alkyl and S-Aryl Thiosemisquarates) The reaction of semisquaric chloride (1) with thiols 2 (X = H) has been investigated. In the presence of triethylamine (Method A) only moderate yields of S-alkyl thiosemisquarates 3a-d were obtained. Moderate to good yields of S-alkyl and S-aryl thiosemisquarates 3a-f were obtained in the presence of aluminum chloride (Method B) and by the reaction of 1 with trimethylsilyl sulfides 2 (X=SiMe3) in the presence of aluminum chloride (Method C).
氧碳和相关化合物;第16.1部分 3-烷基
硫和3-芳基
硫-
3-环丁烯-1,2-二酮的合成(S-烷基和S-芳基
硫半方形化合物)
已研究半方形
氯化物(1)与
硫醇2(X = H)的反应。在
三乙胺的存在下(方法A),仅获得了中等产率的S-烷基
硫半方形化合物3a-d。在铝
氯化物存在下(方法B),以及1与三甲基
硅基
硫化物2(X=SiMe3)在铝
氯化物存在下的反应(方法C),获得了中到良好的S-烷基和S-芳基
硫半方形化合物3a-f的产率。