scholarly journals Polyaddition of Dithiol Compounds to Diethynyl Compounds: Kinetics of the Model Addition Reaction of Thiophenol to Ethynylbenzene

1990 ◽  
Vol 22 (12) ◽  
pp. 1035-1042 ◽  
Author(s):  
Eiichi Kobayashi ◽  
Takatsugu Obata ◽  
Sadahito Aoshima ◽  
Junji Furukawa
Keyword(s):  
Addition Reaction ◽  
Kinetics Of

scholarly journals Detection of L-Proline-Catalyzed Michael Addition Reaction in Model Biomembrane

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Masanori Hirose ◽  
Shigenori Sugisaki ◽  
Keishi Suga ◽  
Hiroshi Umakoshi
Keyword(s):  
Michael Addition ◽  
Reaction Rate ◽  
Phase State ◽  
Addition Reaction ◽  
Michael Addition Reaction ◽  
Membrane Systems ◽  
Liposome Membrane ◽  
Reaction Rate Constants ◽  
Plausible Model ◽  
Kinetics Of

A method to detect the L-proline- (L-Pro-) catalyzed Michael addition reaction in model biomembranes has been established, using N-[p(2-benzimidazolyl)phenyl]maleimide and acetone as reactants. The effect of liposome membranes on this reaction was kinetically analyzed using fluorescence spectroscopy. The kinetics of the reaction were different from those of the constituent lipids of the liposomes. Zwitterionic 1,2-dipalmitoyl-sn-glycero-3-phosphocholine liposome, which is in the solid-ordered phase, had a better value of reaction rate, suggesting that the reaction rate constants of this reaction in liposome membrane systems could be regulated by the characteristics of the liposome membrane (i.e., the phase state and surface charge). Based on the results obtained, a plausible model of the L-Pro-catalyzed Michael addition reaction was discussed. The obtained results provide us with an easily detectable method to assess the reactivity of L-Pro in biological systems.

Interfacial kinetics of a model epoxy–amine addition reaction

2012 ◽  
Vol 14 (39) ◽  
pp. 13532 ◽  
Author(s):  
Tomoyasu Hirai ◽  
Kaoru Kawasaki ◽  
Keiji Tanaka
Keyword(s):  
Addition Reaction ◽  
Interfacial Kinetics ◽  
Epoxy Amine ◽  
Amine Addition ◽  
Kinetics Of

Kinetics of Reactions of 9-Isothiocyanatoacridine with Aromatic and Aliphatic Amines and Fluorescence Properties of the 1-Acridin-9-yl-3-alkyl(aryl)thioureas Obtained

1994 ◽  
Vol 59 (12) ◽  
pp. 2632-2640 ◽  
Author(s):  
Dana Mazagová ◽  
Pavol Kristian ◽  
Gejza Suchár ◽  
Ján Imrich ◽  
Marián Antalík
Keyword(s):  
Nucleophilic Addition ◽  
Addition Reaction ◽  
Spectroscopic Method ◽  
Reaction Rates ◽  
Aliphatic Amines ◽  
Phenyl Isothiocyanate ◽  
Alkyl Aryl ◽  
Nucleophilic Addition Reaction ◽  
Kinetics Of ◽  
Aromatic And Aliphatic Amines

Kinetics of nucleophilic addition reaction of 9-isothiocyanatoacridine with seventeen aliphatic and aromatic amines in organic solvents has been studied by the VIS spectroscopic method. 9-Isothiocyanatoacridine reacted by about two orders of magnitude faster than phenyl isothiocyanate. The reaction rates of aliphatic amines were markedly affected by steric effects. Excepting 1-acridin-9-yl-3-butylthiourea (IIIo), the products obtained exhibited weaker fluorescence than the starting 9-isothiocyanatoacridine.

scholarly journals Radical Addition Reaction of Benzeneselenol to Styrene. Kinetics of the Model of Polyaddition.

1994 ◽  
Vol 51 (5) ◽  
pp. 337-343 ◽  
Author(s):  
Eiichi KOBAYASHI ◽  
Kazuhiro TAKEHARA ◽  
Sadahito AOSHIMA
Keyword(s):  
Addition Reaction ◽  
Radical Addition ◽  
Kinetics Of

scholarly journals Thin Layer Chromatography-A Tool to Investigate Kinetics of Michael Addition Reaction

2018 ◽  
Vol 10 (3) ◽  
pp. 323-329 ◽  
Author(s):  
M. A. B. H. Susan ◽  
G. Ara ◽  
M. M. Islam ◽  
M. M. Rahman ◽  
M. Y. A. Mollah
Keyword(s):  
Ionic Liquids ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Michael Addition ◽  
Binary Systems ◽  
Addition Reaction ◽  
Average Rate ◽  
Michael Addition Reaction ◽  
Layer Chromatography ◽  
Kinetics Of

Thin layer chromatography (TLC), a tool for defining identity, purity, and quantitation of a compound, has also been proved useful for monitoring the progress of a chemical reaction. However, the   technique is yet to be exploited for investigating the kinetics of a reaction systematically. In this work, we used TLC for measuring the time for consumption of a reactant in Michael addition reaction of acetylacetone with 2-cyclohexene-1-one. Average rate of the model reaction was determined using a definite initial concentration of acetylacetone for a series of catalyst systems like NaOH, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), DBU based protic ionic liquids (PILs) 1,8-diazabicyclo[5.4.0]undec-7-ene-8-ium hydroxide ([HDBU]OH) and 1,8-diazabicyclo[5.4.0]undec-7-ene-8-ium acetate ([HDBU]CH3COO), a DBU based aprotic ionic liquid (AIL), 8-hexyl-1,8-diazabicyclo [5.4.0]undec-7-ene-8-ium hydroxide ([C6DBU]OH), and binary systems of the ionic liquids with molecular solvents, such as, water, DBU, and acetic acid. The kinetic data on the performance of the chosen catalysts were interpreted on the basis of the established mechanism of the reaction. Finally, the prospect of the method based on TLC as a suitable technique for kinetic study of chemical reactions has been discussed.

Sign in / Sign up

Export Citation Format

Share Document