PROCESS FOR PREPARING 3-(HYDROXYMETHYL)CHROMEN-4-ONES
3-(Hydroxymethyl)chromen-4-ones of formula (I) are described and a process f or preparing said compounds. The process consists in reacting the compounds of general formula (II) wherein R is hydrogen, halogen, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms optionally substitute...
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Main Authors | , , , , |
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Format | Patent |
Language | English French |
Published |
07.11.2006
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Subjects | |
Online Access | Get full text |
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Summary: | 3-(Hydroxymethyl)chromen-4-ones of formula (I) are described and a process f or preparing said compounds. The process consists in reacting the compounds of general formula (II) wherein R is hydrogen, halogen, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms optionally substituted by phenyl or halogen, with formaldehyde and a basic catalyst followed by dehydration in an acid medium to form 3-(hydroxymethyl)chromen-4-ones of general formula (I), where in R is as defined for (II). |
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Bibliography: | Application Number: CA19992344664 |