A MILD AND EFFICIENT ROUTE TO THE PHARMACOPHORE OF THE ENEDIYNE ANTITUMOR AGENTS - (Z)-1,6-[BIS (TRIMETHYLSILYL)]-HEX-3-ENE-1,5-DIYNE VIA A NOVEL CARBENOID COUPLING REACTION
(Z)-1,6-[Bis (trimethylsilyl)] -hex-3-ene-1,5-diyne has been prepared in high yield and in one pot from trimethylsilylpropargyl bromide by a remarkably stereoselective tandem carbenoid coupling-HX elimination sequence.