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Phenylacetaldehyde is an aldehyde that consists of acetaldehyde bearing a phenyl substituent; the parent member of the phenylacetaldehyde class of compounds. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite.
[3] [4] In both species, it is subsequently metabolized into 4-hydroxyphenylacetate by aldehyde dehydrogenase (ALDH) enzymes in humans and the phenylacetaldehyde dehydrogenase (feaB) enzyme in E. coli. [3] [4] [5] The condensation of 4-hydroxyphenylacetaldehyde and dopamine is a key step in the biosynthesis of benzylisoquinoline alkaloids.
Phenylglyoxal was first prepared by thermal decomposition of the sulfite derivative of the oxime: [5]. C 6 H 5 C(O)CH(NOSO 2 H) + 2 H 2 O → C 6 H 5 C(O)CHO + NH 4 HSO 4. More conveniently, it can be prepared from methyl benzoate by reaction with KCH 2 S(O)CH 3 to give PhC(O)CH(SCH 3)(OH), which is oxidized with copper(II) acetate. [6]
phenylpyruvate phenylacetaldehyde + CO 2. This enzyme belongs to the family of lyases, specifically the carboxy-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is phenylpyruvate carboxy-lyase (phenylacetaldehyde-forming). This enzyme is also called phenylpyruvate carboxy-lyase.
The Wacker process or the Hoechst-Wacker process (named after the chemical companies of the same name) refers to the oxidation of ethylene to acetaldehyde in the presence of palladium(II) chloride and copper(II) chloride as the catalyst. [1]
DOPAL is known to be a dopaminergic neurotoxin. [2] [4] [3] It is much more potent in this regard than dopamine itself and other metabolites of dopamine.[2] [4] [3] According to the catecholaldehyde hypothesis, DOPAL plays a role in aging-related dopaminergic neurodegeneration and in the pathogenesis of Parkinson's disease.
For example, an acyl-diazomethane can react with an aldehyde in the presence of a DBU catalyst to form isolable α-diazo-β-hydroxy esters (shown below). [27] Example of the Büchner–Curtius–Schlotterbeck reaction forming a compound that incorporates the diazo group
Phenylacetones are a group of organic compounds containing a phenyl moiety and an acetone moiety bonded together, the archetypal example being phenylacetone.. Phenylacetones often play a role in the illicit synthesis of amphetamine and its analogues, 3,4-methylenedioxyphenyl-2-propanone (MDP2P) for example being used in the production of 3,4-methylenedioxyamphetamine (MDA), [1] 3,4 ...