Results 11 to 20 of about 41,455 (313)

Nucleophilic Benzoylation Using a Mandelic Acid Dioxolanone as a Synthetic Equivalent of the Benzoyl Carbanion. Oxidative Decarboxylation of α-Hydroxyacids [PDF]

open access: goldMolecules, 2004
The synthesis of alkyl aryl ketones using a mandelic acid dioxolanone as a synthetic equivalent (Umpolung) of the benzoyl carbanion is reported. The methodology involves alkylation of the mandelic acid dioxolanone, hydrolysis of the dioxolanone moiety in
José R. Pedro   +3 more
doaj   +2 more sources

THE OXIDATIVE DECARBOXYLATION OF MALATE BY ASCARIS LUMBRICOIDES [PDF]

open access: hybridJournal of Biological Chemistry, 1957
Howard J. Saz, Jeanette A. Hubbard
openalex   +3 more sources

Oxidative decarboxylation of glycollate and glyoxylate by leaf peroxisomes [PDF]

open access: greenBiochemical Journal, 1974
1. The conditions under which peroxisomal preparations from leaves of spinach beet and spinach catalyse the release of 14CO2 from [1-14C]glycollate and [1-14C]glyoxylate were investigated. 2. At pH8, 14CO2 production from [1-14C]glyoxylate was accompanied by equivalent quantities of formate.
Barry Halliwell, Vernon S. Butt
openalex   +4 more sources

Oxidative Decarboxylation : Partial Synthesis of Aegiceradienol (nor Echinocystadienol) [PDF]

open access: greenChemischer Informationsdienst, 1982
AbstractDie oxidative Decarboxylierung der pentacyclischen Acetoxycarbonsäure (I) liefert ein Gemisch der isomeren Diene (II), die säurekatalysiert zum konjugierten Dien (IIIa) isomerisiert und weiter zum im Titel genannten Dienalkohol (IIIb) hydrolysiert ′werden.
T. SUNDARARAMAIAH, V. VISHWANATH RAO
openalex   +4 more sources

New Insights on Hemp Oil Enriched in Cannabidiol: Decarboxylation, Antioxidant Properties and In Vitro Anticancer Effect

open access: yesAntioxidants, 2021
This study aimed to obtain and characterize extracted hemp oil enriched in cannabidiol (CBD) by decarboxylation of cannabidiolic acid (CBDA) and to give new insights into its antioxidant and anticancer effects.
Anca Roxana Petrovici   +5 more
doaj   +1 more source

Overcoming Challenges in Small-Ring Transfer: Direct Decarboxylative Hydroalkylation of Alkenes via Iron-Thiol Catalysis. [PDF]

open access: yesAngew Chem Int Ed Engl
Herein, we present a catalytic approach for the direct decarboxylation of challenging CF3‐cyclopropyl and cyclobutyl carboxylic acids using cooperative iron‐thiol catalysis. This strategy enables the efficient generation of valuable radicals that can be incorporated into activated and unactivated alkenes, offering access to elusive chemical space ...
Giri R   +5 more
europepmc   +3 more sources

Initial Steps to Engineer Coproheme Decarboxylase to Obtain Stereospecific Monovinyl, Monopropionyl Deuterohemes

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
The oxidative decarboxylation of coproheme to form heme b by coproheme decarboxylase is a stereospecific two-step reaction. In the first step, the propionate at position two (p2) is cleaved off the pyrrole ring A to form a vinyl group at this position ...
Hanna Michlits   +3 more
doaj   +1 more source

Thermal decarboxylation of acidic cannabinoids in Cannabis species: identification of transformed cannabinoids by UHPLC-Q/TOF–MS

open access: yesJournal of Analytical Science and Technology, 2022
Decarboxylation of cannabidiolic acid (CBDA) is an important step for efficient production of the active pharmaceutical component cannabidiol (CBD) in Cannabis species.
Chaeyoung Seo   +7 more
doaj   +1 more source

Visible light-promoted transition metal-free direct C3-carbamoylation of 2H-Indazoles

open access: yesFrontiers in Chemistry, 2022
We reported a general transition metal-free transformation to access C3-carbamoylated 2H-indazoles via visible light-induced oxidative decarboxylation coupling, in the presence of oxamic acids as the coupling sources, 4CzIPN as the photocatalyst, and ...
Chunhua Ma   +7 more
doaj   +1 more source

Encapsulation of ascorbic acid promotes the reduction of Maillard reaction products in UHT milk [PDF]

open access: yes, 2016
The presence of amino groups and carbonyls renders fortified milk with ascorbic acid particularly susceptible to the reduction of available lysine and to the formation of Maillard reaction products (MRPs), as Nε-(Carboxyethyl)-L-lysine (CEL), Nε ...
Ahmed   +36 more
core   +5 more sources

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