Preparation of gamma-pyrones

Details Preparation of gamma-pyrones Preparation of gamma-pyrones

1978-01-16

1979-04-03

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30922

Patent

active

041477057

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:
patent: 3707482 (1972-12-01), Laliberte
patent: 3751434 (1973-08-01), Lefebvre

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