Preparation and characterization of bis[4-dimethylamino-2-pyrimidyl] dichalcogenides (S, Se, Te): X-ray crystal structure of bis[4-dimethylamino-2-pyrimidyl] diselenide and its physicochemical behavio

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• 作者：K.K. Bhasin ; Ekta Arora ; Khushwinder Kaur ; Sung-Kyu Kang ; Michael Gobel ; T.M. Klapoetke ; S.K. Mehta
• 关键词：Selenium ; Tellurium ; Pyrimidine ; Organochalcogens ; Microemulsion
• 刊名：Tetrahedron
• 出版年：2009
• 出版时间：3 January 2009
• 年：2009
• 卷：65
• 期：1
• 页码：247-252
• 全文大小：382 K

文摘

Novel and synthetically important bis[4-dimethylamino-2-pyrimidyl] dichalcogenides (S, Se, Te) have been prepared and characterized with the help of elemental analysis and various spectroscopic techniques. The methodology employs hydrazine hydrate in dimethylformamide to reduce elemental chalcogen to generate the dichalcogenide anions, E₂²⁻ (E=S, Se, Te), followed by reaction with 2,4-dichloropyrimidine to afford bis[4-dimethylamino-2-pyrimidyl] dichalcogenides in good yield. It further exploits the additional compositional degree of freedom available in mixed surfactant solution to allow solubilization and stabilization of bis[4-dimethylamino-2-pyrimidyl] diselenide in microemulsion media.