Glycosyl halides, variously substituted with ether, acetal, or ester protecting groups, were converted to the corresponding glycals in high yield by reaction with (Cp2TiCl)2. A glycosyl chloride was less reactive than the analogous bromide.
Spencer, R. P., & Schwartz, J. (1996). Variously substituted glycals are readily prepared from glycosyl bromides using (Cp2TiCl)2. Tetrahedron Letters, 37(25), 4357–4360. https://doi.org/10.1016/0040-4039(96)00865-9