5- Formyl-2-methoxyphenol

H.56) (H.56) Benzaldehyde, 4-hydroxy-3-methoxy-, 4-hydroxy-3-methoxybenzaldehyde, 4-formyl-2-methoxyphenol, vanillin, p-vanillin 1121-33-5] FEMA 3107... 

I ligand=4-formyl-2-methoxyphenol ) ligand=4-cresoxyacetic acid ... 

A new route to vanillin has also been proposed this involves condensation of guaiacol with formaldehyde, oxidation of the resulting 2,4-dihydroxymethyl-6-methoxyphenol to 2-carboxy-4-formyl-6-methoxyphenol in the presence of Pd or Pt/C catalysts promoted with bismuth, then decarboxylation [105-107]. 

Formylplienol (4-Hydroxy benzaldehyde) 4-(Metbylsulfonyl)phenal o-Vanillin(2-Formyl-6-methoxyphenol,... 

Formylplicnol (4-Hydroxybenzaldehyde) 4 Methylsnlfonyl)phenol o-Vanillin (2-Formyl-6-methoxyphenol, 2-Hydroxy-3-methoxybenzaidehyde) 4-Cyanophenol (4-Hydroxybenzonitriie)... 

The Reimer-Tiemann formylation of phenols with chloroform was attempted under sonication, in order to improve the frequently unsatisfactory yields. Optimal conditions make use of aqueous sodium hydroxide, and the electrophilic attack of the carbene on the ring is followed by the hydrolysis of the dichloromethyl group to the aldehyde. The advantages of the sonochemical method are not clearly apparent. The positive effect of sonication is limited to the reaction of 4-chlorophenol, and 4-methyl- and 4-methoxyphenol react with a yield lower than conventionally found. 

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