Dehalogenative Coupling of <i>gem</i>-Dihalides and Benzyl Halides by Means of Hexacarbonyltungsten(0) and Related Compounds

Abstract

Abstract W(CO)6 and WCl6–LiAlH4 systems have been found to cause coupling of gem-dihalides and benzyl halides giving olefins and bibenzyl derivatives, respectively. The tungsten reagents also cause coupling of some alcohols. The carbene intermediate was suggested from the formation of a cyclopropane derivative.