Results 41 to 50 of about 1,054 (157)
B. thuringiensis and B. altitudinis, isolated from chitin‐enriched soil, causing mortality in Euchistus heros under laboratory conditions. First report of B. altitudinis in the control of E. heros. Abstract BACKGROUND Biological control using entomopathogenic microorganisms is a more sustainable alternative to chemical pesticides for managing insect ...
Vicente Guilherme Handte +6 more
wiley +1 more source
New Aspect of the in Vitro Metabolism of Some Biogenic Amines [PDF]
Tryptamine, 5-methoxytryptamine, tyramine, histamine, octopamine, dopamine, and noradrenaline were incubated with the »nuclear fraction« of rat liver homogenate. The first four amines were also incubated with rat liver slices.
S. Iskrić, S. Kveder
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ABSTRACT Selenium (Se) biofortification improves crops' nutritional value, while nano‐selenium (nano‐Se) offers enhanced bioavailability over traditional Se fertilisers. The quality of tea (Camellia sinensis) depends critically on nitrogen (N) metabolism and amino acid balance, particularly of theanine.
Qingxue Guo +4 more
wiley +1 more source
Direct, One-Pot Reductive Alkylation of Anilines with Functionalized Acetals Mediated by Triethylsilane and TFA. Straightforward Route for Unsymmetrically Substituted Ethylenediamine [PDF]
none5A new, robust, and reliable method has been developed for the selective reductive N-alkylation of primary and secondary aromatic amines with some functionalized acetals using TFA/Et 3SiH as a reagent combination.
core +1 more source
Synthesis of New Some Imidazole Derivatives Containing ?-Lactam Ring [PDF]
In this work 5-methylene-yl - (2-methy –oxazole-4-one) (1H) imidazole (1) were synthesized from the reaction of L-Histidine with acetic anhydride and which converted to the of 5-methylene-yl-(2-methyl 3-amino imidazole-4-one)-1H-imidazole (2) by reaction
Al-Mouamin, Thanaa Mahdi +2 more
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Математическое описание сорбции этиламинов из воздуха волокнистыми катионитами в условиях ограниченной проницаемости сорбата [PDF]
A mathematical model for description of the sorption capacity of ion exchangers on alkaline compounds protonizable in aqueous solutions (exemplified by ammonia, mono-, diand triethylamine) was proposed.
A. L. Pushkarchuk +9 more
core +2 more sources
Transaminase and Norcoclaurine Synthase One‐Pot Cascades Towards (1S)‐Tetrahydroisoquinolines
A TAm‐NCS cascade towards THIQs has been established, starting from amines with the in situ production of aldehydes. The cascade was used with a variety of nonfunctionalized and functionalized amines, and reaction conditions modified to enhance formation of the desired cross‐products.
Jianxiong Zhao +5 more
wiley +1 more source
Catalytic enantioselective synthesis of α-chiral azaheteroaryl ethylamines by asymmetric protonation [PDF]
The direct enantioselective synthesis of chiral azaheteroarylethylamines from vinyl aza-heterocycles and anilines is reported. A chiral phosphoric acid (CPA) catalyst promotes dearomatizing aza-Michael addition giving a prochiral exocyclic aryl enamine ...
Kennedy, Alan R. +4 more
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Diese Studie untersucht den Einfluss von Spuren diverser Elemente des p‐Blocks in der elektrochemischen reduktiven Aminierung, wobei sich für Pb mit Bi eine weniger toxische Alternative gezeigt hat. Die Verwendung von Bi als Additiv wurde weiter optimiert, indem der Einfluss der Additivkonzentration, der Reaktionstemperatur und des Kathodenmaterials ...
Justus Kümper +5 more
wiley +1 more source
Alkene aminations catalysed by transition metals [PDF]
Amines, especially long chain tertiary alkylamines, are industrially useful compounds with a relatively high commercial value. They are currently synthesised by a variety of multi-step processes, but a simple "one pot" catalytic synthesis is a highly ...
Nuttall, Peter
core

