Summary D-Sorbitol, in solution with 4 N hydrochloric acid and one molecular equivalent of benzaldehyde, condenses to yield principally a cryptocrystalline dibenzyli# ene-D-sorbitol melting at 219-221'. The latter substance, upon oxidation with lead tetraacetate in glacial acetic acid, produces formaldehyde and aldehydo-2, 3, 4, 5-dibenzylidene-~-xylose, which is conveniently isolated as a crystalline methyl hemiacetal. This hemiacetal is converted ...
[Bothwell, Jason M.; Angeles, Veronica V.; Carolan, James P.; Olson, Margaret E.; Mohan, Ram S. Tetrahedron Letters, 2010 , vol. 51, # 7 p. 1056 - 1058]
