IN view of the finding of Quastel & Wheatley [1933, 1] that certain amines, such as isoamylamine, inhibit the respiration of brain tissue, an investigation has been made of the power of various organs to detoxicate such amines. It was found early in the work that isoamylamine is broken down by brain cortex, and this finding caused attention to be turned to the oxidation of the simpler aliphatic...

Recent trends in food security are promoting an increasing search for trace compounds that can affect human health. Biogenic amines, the so-called natural amines with physiological significance, belong to this group of substances. Their amounts are usually increased during controlled or spontaneous microbial fermentation of food or in the course of food spoilage. Several methods exist for isola...

Soluble polymer bound reagent 1 has been prepared to cleave tertiary amines from REM resin. Normally, amines cleaved from REM resin require extraction or chromatography to remove excess cleavage reagent and its byproducts. The solubility profile of non-crosslinked polystyrene (NCPS) based reagent 1 eliminates the need for such purification and allows for the direct isolation of a library of pur...

A new one-pot method has been developed for the selective synthesis of secondary amines via reductive amination of the corresponding nitriles using Pt nanowires as a catalyst. This method allows for the synthesis of both unsymmetrical and symmetrical secondary amines in excellent yields (up to 95%) in the presence or absence of additional amines, respectively. Furthermore, the reaction proceeds...

UNLABELLED BACKGROUND Pyrroles are widely distributed in nature and important biologically active molecules. The reaction of amines with 2,5-dimethoxytetrahydrofuran is a promising pathway for the synthesis of pharmacologically active pyrroles under microwave irradiation. RESULTS Microwave-induced polystyrenesulfonate-catalyzed synthesis of pyrroles from amines and 2,5-diemthoxytetrahydrof...

The hydroamination reaction offers a very attractive route for the synthesis of alkylated amines and their derivatives with no byproduct formation. Heterogeneous intermolecular hydroamination reactions of alkynes with aromatic amines using different inexpensive copper salts of hetropolyacid catalysts were investigated. Among heteropoly salts, copper salts of silicotungstic acid showed highest a...

T classical biogenic amines (serotonin, noradrenaline, dopamine, and histamine) play important roles as neuromodulators. These transmitters are synthesized from precursor amino acids in specific neurons and stored in vesicles at synaptic terminals for release into the synaptic cleft in response to neuronal depolarization. In the extracellular space, the released amines bind to specific receptor...

Supported amines are considered as adsorbents to replace aqueous amines for carbon capture and for CO(2) capture/conversion into chemicals. Here, amines are grafted to SiO(2) or Ti-SiO(2) by using aminopropyl triethoxysilane (APTES) or (3-triethoxysilylpropyl)-tert-butylcarbamate (TESPtBC) and then removing the carbamate group introduced by the latter by mild heating to 'deprotect' the amine. S...

Primary and secondary amines were isolated from whey as their 2,4-dinitrophenyl derivatives, separated by thinlayer partition chromatography, and identified by gas chromatography-mass spectrometry. Examination of raw and pasteurized sweet whey, reconstituted spray dried whey powder, and proteinfree ultrafdtration permeate of sweet and acid wheys revealed the same qualitative distribution of ami...