Journal
CARBOHYDRATE RESEARCH
Volume 337, Issue 14, Pages 1261-1268Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0008-6215(02)00129-5
Keywords
hexitols; galactitol; D-glucitol; D-mannitol; thermal dehydration; zeolites; molecular sieves
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Dehydration of galactitol, D-glucitol and D-Mannitol at high temperature in the presence of molecular sieves without solvent under an argon atmosphere is described. Cyclodehydration products with retention or inversion of the configuration at asymmetric carbon atoms, were observed. Reaction of galactitol yielded racemic 1,4-anhydrogalactitol in a first step and then racemic 1,4:3,6-dianhydroiditol. Complete analytical separations of exhaustively O-acetylated reaction products were achieved by GC and structures were assigned using co-injection with standards. (C) 2002 Elsevier Science Ltd. All rights reserved.
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