Biomaterial Database

[The micelle catalysis of cetyltrimethyl ammonium bromide on phenylalanine arylation by 2,4-dinitrofluorobenzene]. 1985

D Kottke, and T Beyrich, and W Friedrich

The reaction of phenylalanine with 2,4-dinitrofluorobenzene is increased by substances forming micells. As against the basic test, the increase is not dependent on conditions using solutions of 2.42 X 10(-3) mol phenylalanine and 1.62 X 10(-4) mol dinitrofluorobenzene the rate constant of the reaction proportionally increases by addition of 6.2 X 10(-4) to 4.4 X 10(-3) mol cetyltrimethyl ammonium bromide solution, then remains constant and finally decreases with further increase of the concentration. These curves could continuously be registered with varying pH values, although the basic and the catalytic reaction rate of both the reactions will increase according to the pH value with any buffer. A further increase of the basic and the catalyzed reactions can be enabled by increasing the temperature. The validity of the Arrhenius equation could be proved.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008823	Micelles	Particles consisting of aggregates of molecules held loosely together by secondary bonds. The surface of micelles are usually comprised of amphiphatic compounds that are oriented in a way that minimizes the energy of interaction between the micelle and its environment. Liquids that contain large numbers of suspended micelles are referred to as EMULSIONS.	Micelle
D009578	Nitrobenzenes	BENZENE derivatives carrying nitro group substituents.
D010649	Phenylalanine	An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.	Endorphenyl,L-Phenylalanine,Phenylalanine, L-Isomer,L-Isomer Phenylalanine,Phenylalanine, L Isomer
D002384	Catalysis	The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.	Catalyses
D002593	Cetrimonium Compounds	Cetyltrimethylammonium compounds that have cationic detergent, antiseptic, and disinfectant activities. They are used in pharmaceuticals, foods, and cosmetics as preservatives; on skin, mucous membranes, etc., as antiseptics or cleansers, and also as emulsifiers. These compounds are toxic when used orally due to neuromuscular blockade.	Cetyltrimethylammonium Compounds,Cetrimides,Compounds, Cetrimonium,Compounds, Cetyltrimethylammonium
D002621	Chemistry	A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D004139	Dinitrofluorobenzene	Irritants and reagents for labeling terminal amino acid groups.	DNFB,Fluorodinitrobenzene,1-Fluoro-2,4-dinitrobenzene,1 Fluoro 2,4 dinitrobenzene
D006863	Hydrogen-Ion Concentration	The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH	pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000077286	Cetrimonium	Cetyltrimethylammonium compound whose salts and derivatives are used primarily as topical antiseptics.	1-Hexadecyltrimethylammonium Chloride,CTAB,CTAOH,Cetavlon,Cetrimide,Cetriminium,Cetrimonium Bromide,Cetrimonium Chloride,Cetrimonium Hydroxide,Cetrimonium Iodide,Cetrimonium Methosulfate,Cetrimonium Methyl Sulfate,Cetrimonium Monosulfate,Cetyltrimethylammonium Bromide,Cetyltrimethylammonium Chloride,HTAB Cpd,Hexadecyl Trimethyl Ammonium Bromide,Hexadecyl(trimethyl)azanium,Hexadecyltrimethylammonium Bromide,Hexadecyltrimethylammonium Octylsulfonate,Octylsulfonate, Hexadecyltrimethylammonium