The Preparation of Cyclic Dithia and Thiaza Compounds by the Reaction of Potassium Carbonate with Heterocumulenes and Alkylene Dibromides or Carbonate Catalyzed by Organostannyl Compounds
作者:Tatsuo Fujinami、Shinichi Sato、Norimasa Uchida、Shizuyoshi Sakai
DOI:10.1246/bcsj.55.1174
日期:1982.4
3-dithia- and 1,3-thiaza-2-ylidene compounds were obtained by the heterogeneous reaction of solid potassium carbonate, a sulfur-containing heterocumulene, such as aryl isothiocyanate, carbon disulfide, or carbonyl sulfide, and alkylene dibromides or ethylene carbonate in the presence of bis(tributylstannyl) compounds. The effect of an organostannyl catalyst on these reactions is discussed.
环状 1,3-二硫杂和 1,3-噻唑-2-亚基化合物是通过固体碳酸钾、含硫杂枯烯如异硫氰酸芳基酯、二硫化碳或羰基硫与二溴化烷的多相反应获得的或在双(三丁基甲锡烷基)化合物存在下的碳酸亚乙酯。讨论了有机锡烷基催化剂对这些反应的影响。