Carbohydrate Research p. 229 - 234 (1981)
Update date:2022-09-26
Topics: Distillation Catalyst Product Dehydration Gas Chromatography Reactant Isomerisation Pentitols Acid media
Wisniewski, Andrzej
Szafranek, Janusz
Sokolowski, Janusz
The products of dehydration of pentitols in aqueous sulfuric acid have been studied by g.l.c.-m.s.Four isomeric 1,4-anhydropentitols were formed from D-arabinitol, but only two from xylitol and ribitol.The number of products could only be explained by assuming inversion of configuration at C-2 or C-4 during 1,4- or 2,5-cyclisation reactions.No product which involved inversion of configuration at C-3 was observed.Various mechanisms of isomerisation are considered.
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