ChemInform Abstract: CARBONYL AND THIOCARBONYL COMPOUNDS. XX. REACTION OF HYDROXYBENZALDEHYDES WITH O‐PHENYLENEDIAMINE; NEWER ASPECTS IN BENZIMIDAZOLE SYNTHESIS

Vanillin plays an important role in flavouring and as aroma agent. Vanillin has been used as a chemicalintermediate in pharmaceutical and chemical syntheses. Schiff base products have been proved to posesbeneficial biological effect towards health. Fourteen vanillin derivatives were synthesized via Schiff basereaction using p-vanillin as the starting material reacted with 2-aminobenzenethiol, furan-2-carbohydrazide, 2-hydrazinylpyridine, 4-hydroxybenzohydrazide, acetohydrazide, benzohydrazide, (diphenylmethylidene)hydrazine, pyridine-4-carbohydrazide, benzene-1,2-diamine, phenylhydrazine, 2-hydroxybenzohydrazide, 1,3-benzothiazol-2-amine, 1-cyclohexylthiourea respectively. All of the compounds were characterized by elementalanalysis, FTIR and 1H NMR.

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Synthesis and Spectral Characterization of 4-Hydroxy-3- Methoxybenzaldehyde Derivatives

Asaruddin¹,

Ezekiel²,

Ariffeen³

et al. 1970

BJRST

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ChemInform Abstract: CARBONYL AND THIOCARBONYL COMPOUNDS. XX. REACTION OF HYDROXYBENZALDEHYDES WITH O‐PHENYLENEDIAMINE; NEWER ASPECTS IN BENZIMIDAZOLE SYNTHESIS

Abstract: o‐Phenylendiamin (I) setzt sich mit den Arylaldehyden (II) bei niedriger Temp. zu den Monoanilen (III) um, während in siedendem Ethanol mit (IIa) die Benzimidazole (IVa) zusammen mit den entsprechenden Dianilen, mit (IIb) dagegen ausschließlich die Benzimidazole (VIb) gebildet werden.

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Synthesis and Spectral Characterization of 4-Hydroxy-3- Methoxybenzaldehyde Derivatives

Synthesis and Spectral Characterization of 4-Hydroxy-3- Methoxybenzaldehyde Derivatives

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