MANUFACTURE OF 3-FORMYL-5,6-DIHYDRO-2H-PYRANE

MANUFACTURE OF 3-FORMYL-5,6-DIHYDRO-2H-PYRANE

1. A process for the preparation of 3-formyl-5,6-dihydro-2H-pyran of the formula I see diagramm : EP0120297,P5,F1 by reacting acrolein in the presence of water, acids and organic solvents at elevated temperature, wherein the reaction is carried out in the presence of halohydrocarbons of 1 to 6 carbo...

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Bibliographische Detailangaben
Hauptverfasser: HAINTSU ETSUKUHARUTO, GERUTO HAIREN, NORUBERUTO GEETSU, KURAUSU HARUBURITSUTAA
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:1. A process for the preparation of 3-formyl-5,6-dihydro-2H-pyran of the formula I see diagramm : EP0120297,P5,F1 by reacting acrolein in the presence of water, acids and organic solvents at elevated temperature, wherein the reaction is carried out in the presence of halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms, as solvents, at between 60 and 150 degrees C.