Solvent effect on photoisomerisation of 3-methyl-1-phenylbutane-1,2-dione 2-oxime.
Photoisomerisation of (2E)- and (2Z)-3-methyl-1-phenylbutane-1,2-dione 2-oxime (MPBDO) in several solvents was studied. With increasing dielectric constants of solvents, kinetic constants of forward reactions (E-form-->Z-form) did not change appreciably but those of reverse reactions (Z-form-->E-form) decreased. The positive correlation was found between equilibrium constants of photoisomerisation and dielectric constants of solvents.
Faculty of Pharmaceutical Sciences, Fukuoka University, Japan. ikeda@fukuoka-u.ac.jp
Hirohito
H
Ikeda
Takuya
T
Suzue
Miho
M
Yukawa
Tokihiro
T
Niiya
Yoshinobu
Y
Goto
D002851:Chromatography, High Pressure Liquid; D019295:Computational Biology; D007536:Isomerism; D007700:Kinetics; D010091:Oximes / Q000737:chemistry*; D010777:Photochemistry; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013816:Thermodynamics
C470110:3-methyl-1-phenylbutane-1,2-dione 2-oxime; D010091:Oximes; D012997:Solvents