Title of article :
Highly stereoselective method to prepare bis-phenylchalcogen alkenes via addition of chalcogenolate to phenylseleno alkynes
Author/Authors :
Perin، نويسنده , , Gelson and Borges، نويسنده , , Elton L. and Alves، نويسنده , , Diego، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2012
Abstract :
The preparation of bis-phenylchalcogen alkenes starting from phenylseleno alkynes is described. The nucleophilic species of selenium, tellurium and sulfur were generated in situ from the reaction of the respective diphenyl dichalcogenide with NaBH4 in PEG-400 as solvent. The chalcogenolate anions were efficiently and selectively added to a variety of phenylselenoalkynes at mild conditions, furnishing the respective (Z)-1,2-bis-phenylchalcogen alkenes in good yields.
Keywords :
Vinyl chalcogenides , Bis-chalcogenides , PEG-400
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters