Process for the production of five-membered or six-membered cycl

Details Process for the production of five-membered or six-membered cycl Process for the production of five-membered or six-membered cycl

1998-10-30

2000-01-11

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549475, C07D30706, C07D30904

Patent

active

060138122

ABSTRACT:
The present invention relates to a process for the production of five-membered or six-membered cyclic ethers, in particular of anhydropolyols, by acid-catalysed cyclodehydration of polyols that contain at least two hydroxyl groups with a spacing enabling ring formation--that is to say, preferably with a spacing of 4 or 5 C atoms. The invention is directed in particular towards the production of anhydrotetritols, anhydropentitols and, particularly preferred, anhydrohexitols, from tetritols, pentitols and hexitols, respectively.

REFERENCES:
Bock et al., Acta Chemica Scandinavica, B35 (1981) pp. 441-449.

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