نتایج جستجو برای: benzoic acids

تعداد نتایج: 268061  

Journal: :Green Chemistry 2022

A simple process to cleave C=C bonds with H 2 O converts cinnamic acids benzaldehydes, benzoic or quinones, selectivity depending on the solvent. comparison of green metrics was performed for conversion ferulic acid vanillin.

Journal: :Plant physiology 1990
C Funk P E Brodelius

Feeding of 4-methoxycinnamic acid, 3,4-dimethoxycinnamic acid and 3,4,5-trimethoxycinnamic acid to cell suspension cultures of Vanilla planifolia resulted in the formation of 4-hydroxybenzoic acid, vanillic acid, and syringic acid, respectively. The homologous 4-methoxybenzoic acids were demethylated to the same products. It is concluded that the side chain degrading enzyme system accepts the 4...

Journal: :Chemistry of Natural Compounds 1973

Journal: :The Journal of the Society of Chemical Industry, Japan 1956

Journal: :The Journal of the Society of Chemical Industry, Japan 1957

2013
Masakazu Yamashita Masato Hata

Seeking the possibility of the formation of benzoic acids from benzyl halides in natural soil, a model oxidation reaction of the halides was carried out in the presence of water and soil in an open air under UV light irradiation. Addition of TiO2 to soil raised the yield of the acid, implying such a metal oxide plays a real catalytic role in this oxidation. By these supplementary experiments, o...

2010
S. P. Mahapatra

N-hydroxyethyl phthalimide (PE-I) was prepared by refluxing phthalic anhydride with ethanolamine. 3phthalimidoethyl substituted benzoic acids (PE-II) were prepared by refluxing N-hydroxyethyl phthalimide with substituted benzoic acids. The corresponding acid chlorides (PE-III) were condensed with benzilidine-4acetophenone derivatives to afford the 3-(phthalimidoethyl)-4-substituted cinnamoyl su...

Journal: :Zeitschrift fur Naturforschung. Section C, Biosciences 1976
W Löffelhardt

The photosynthetic procaryote Anacystis nidulans converts L-phenylalanine and L-tyrosine into benzoic acid and p-hydroxybenzoic acid, respectively. Results obtained with thylakoid fractions support the hypothesis that the reaction sequence is catalyzed by thylakoid-bound enzyme complexes consisting of phenylalanine ammonia-lyase and benzoate synthase of tyrosine ammonia-lyase and p-hydroxybenzo...

2008
Susanta K Sen Ruchi Shrivastava

Proton transfer equilibria in chlorobenzene between a set of di-substituted (2,3-,2,5-,2,6-, 3,5-dichloro and difluoro) benzoic acids including the corresponding mono-substituted acids and the carbinol base of crystal violet have been studied spectrophotometrically. To investigate the effect of disubstitution at orthoand/or metapositions on the strength of benzoic acid, the results have been an...

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