DES as a green solvent to prepare 1,2-bis-organylseleno alkenes. Scope and limitations
作者： Eric F. Lopes , Lóren C. Gonçalves , Julio C.G. Vinueza , Raquel G. Jacob , Gelson Perin
DOI: 10.1016/J.TETLET.2015.10.095
关键词:
摘要: We describe here our results on the use of choline chloride/urea 1:2 as a deep eutectic solvent (DES) in synthesis vinyl selenides. A good selectivity for (E)-1,2-bis-organylseleno alkenes was observed starting from terminal alkynes and diaryl or dibutyl diselenides presence NaBH4. The reaction 1,3-butadiynes with diphenyl diselenide afforded exclusively respective mono-selenylated (Z)-alkenynes. Diphenyl ditelluride reacted phenylacetylene 1,4-diphenyl-but-1-en-3-yne affording (Z)-phenyltelluro yields.
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