Tetrahedron letters

Alkynyl sulfides and selenides from alkynyl bromides and diorganoyl chalcogenides promoted by copper (I) iodide

AL Braga, A Reckziegel, PH Menezes, HA Stefani

Index: Braga; Reckziegel; Menezes; Stefani Tetrahedron Letters, 1993 , vol. 34, # 3 p. 393 - 394

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Citation Number: 60

Abstract

A Typical Experimental Procedure is as follows: A mixture of anhydrous CuI (381 mg, 2 mmol), diorganoyl dichalcogenide (1 mmol) and the appropriate alkynyl bromide (2 mmol) in HMPA (4 ml) was stirred for 2 h at rt, under N 2 atmosphere. The resulting mixture was washed with sat. CUSO 4 solution (4 × 5 ml) dried (MgSO 4 ). After concentration of the solution, the residue was chromatographed on silica gel (eluted with hexane). ... Copyright © 1993 Pergamon ...