Thermal dehydration of polyhydroxy alcohols. Part 2 - The solvent-free thermal dehydration of hexitols on zeolites

被引：43
|
作者：
Kurszewska, M
Skorupowa, E
Madaj, J
Konitz, A
Wojnowski, W
Wisniewski, A
机构：
[1] Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland
[2] Gdansk Tech Univ, Dept Inorgan Chem, PL-80952 Gdansk, Poland
来源：
CARBOHYDRATE RESEARCH | 2002年 / 337卷 / 14期
关键词：
hexitols; galactitol; D-glucitol; D-mannitol; thermal dehydration; zeolites; molecular sieves;
D O I：
10.1016/S0008-6215(02)00129-5
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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.
引用
收藏
页码：1261 / 1268
页数：8
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