期刊
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
卷 21, 期 11, 页码 2093-2099出版社
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0103-50532010001100010
关键词
ionic liquids; hydrochalcogenation; vinyl chalcogenides
资金
- CNPq
- FAPERGS
- FINEP
- CAPES
A general and simple method for the synthesis of vinyl selenides and tellurides starting from terminal alkynes and diorganyl chalcogenides using NaBH4 and [bmim]BF4 as a recyclable solvent was developed. This efficient and improved method furnishes the corresponding vinyl chalcogenides preferentially with Z configuration. We also observed that when the same protocol was applied to phenyl acetylene, (E)-bis-phenylchalcogeno styrenes were obtained in good yields and high selectivity. The ionic liquid was reused up three times without lost of efficiency.
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