In this study, the quantitative determination of eight biogenic amines (cadaverine, serotonin, histamine, spermidine, spermine, tyramine, putrescine and β-phenylethylamine) by an liquid chromatography method with evaporative light scattering detection was performed. The analysis of several samples of conventional, organic and fair trade cocoa-derivatives showed that organic and fair trade sampl...

The effect of different amines on the fluorescence of quantum dots has been discussed in the literature but the mechanism involved is not fully understood. We have studied the interaction of core CdSe quantum dots of different sizes and core-shell CdSe quantum dots with tertiary amines, such as aliphatic amines (triethylamine) and bicyclic amines (DABCO and quinuclidine), using fluorescence tec...

A new method for the direct synthesis of imines from alcohols and amines is described where hydrogen gas is liberated. The reaction is catalyzed by the ruthenium N-heterocyclic carbene complex [RuCl2(IiPr)(p-cymene)] in the presence of the ligand DABCO and molecular sieves. The imination can be applied to a variety of primary alcohols and amines and can be combined with a subsequent addition re...

Biogenic amines are important neuromodulators whose discovery laid the foundation of modern neuropharmacology. These compounds (which include norepinephrine, dopamine, serotonin, and histamine) are stored in secretory vesicles located in the cytoplasm, are released into the extracellular space by regulated exocytosis, then activate specific G protein-coupled receptors (GPCRs) located in preand ...

An efficient and straightforward method for one-pot synthesis of aryl azides from the corresponding amines, employing tributylstannyl azide as transfer reagent of N3 group is described. In this procedure diazotization of aryl amines occurs under mild conditions using tert-butyl nitrite (t-BuONO) and p-toluenesulfonic acid (TsOH). A variety of substituted aryl amines, with both electron-withdraw...

• The observation that tissues depleted of norepinephrine no longer respond normally to certain sympathomimetic amines" led Burn and Rand to hypothesize that these amines exert their effect by releasing norepinephrine from storage sites in the postganglionic adrenergic nerve endings. On the basis of their effect on denervated or reserpine-pretreated tissues, the sympathomimetic amines have been...

The possibility that nitroglycerin modifies the metabolic effects of the sympathominietic amines wits tested in cats. Changes in the heart rate, blood pressure, height of the electrocardiographic T-wave and myoctirdial oxygen consumption following the injection of epinephrine or 1-arterenol were compared with changes in these indices after nitroglycerin was given with these sympathomimetic amin...

Studying the relationship between rhizosphere microorganisms and root exudates is of great significance for interaction plants, prevention control soil-borne diseases. This article analyzed effects different on tobacco microorganisms. It was found that bacterial wilt pathogen can greatly increase acids amines, while probiotic B. amyloliquefaciens ZM9 eliminate some amines. The results study sho...

New methodology for the protecting-group-free synthesis of primary amines is presented. By optimizing the metal hydride/ammonia mediated reductive amination of aldehydes and hemiacetals, primary amines were selectively prepared with no or minimal formation of the usual secondary and tertiary amine byproduct. The methodology was performed on a range of functionalized aldehyde substrates, includi...

In this review, we summarize recent progress from our group with regard to Pd-catalyzed oxidative amination of alkenes with amines. Intermolecular oxidative amination of alkenes with secondary anilines was induced using a palladium-complex catalyst combined with molybdovanadophosphate as a co-catalyst under dioxygen, leading to allylic amines and enamines in good yields with high selectivities....