[The micelle catalysis of cetyltrimethyl ammonium bromide on phenylalanine arylation by 2,4-dinitrofluorobenzene].
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.
D002384:Catalysis; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D004139:Dinitrofluorobenzene / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008823:Micelles; D009578:Nitrobenzenes / Q000032:analysis*; D010649:Phenylalanine / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D013696:Temperature
D002593:Cetrimonium Compounds; D008823:Micelles; D009578:Nitrobenzenes; D000644:Quaternary Ammonium Compounds; D010649:Phenylalanine; D004139:Dinitrofluorobenzene; D000077286:Cetrimonium
Untersuchungen zur Mizellkatalyse des Cetyltrimethylammoniumbromids auf die Arylierung des Phenylalanins mittels 2,4-Dinitrofluorbenzen.