Preparation of gamma-pyrones

Details Preparation of gamma-pyrones Preparation of gamma-pyrones

1982-07-19

1984-03-06

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549418, C07D30922

Patent

active

044355840

ABSTRACT:
2-Methyl-3-hydroxy-4H-pyran-4-one is prepared by contacting 1(2-furyl)-1-ethanol in aqueous solution with two equivalents of a halogen oxidant at room temperature and then heating until the hydrolysis of the formed 4-halo-dihydropyran intermediate is substantially complete. Other valuable related gamma-pyrones are prepared in analogous manner from appropriate alcohols.

REFERENCES:
Achmatowicz et al., Tetrahedron, 27, 1973 (1971).
Shono et al., Tetrahedron Letters, 17, 1363 (1976).

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