Organotitanium chemistry XVIII. Dehalogenation of organic halides by Cp2TiX (X = Cl, Br)

Article abstract of DOI:10.1016/0022-328X(90)85446-6

Dicyclopentadienyltitanium chloride and bromide prepared in situ from the reduction of dicyclopentadienyltitanium dichloride by isopropylmagnesium chloride and bromide, respectively, are effective dehalogenating reagents for benzylic, allylic halides and α-bromoketones.Benzylic and allylic halides are transformed into the coupling products whereas the α-bromoketones are reduced to the corresponding ketones in satisfactory yields under mild conditions.