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Remarkable binuclear Schiff‐based complex catalyze the epoxidation of alkenes: effects of substituent group
Author(s) -
Guo Yingxiong,
Li Pan,
Zou Wenhong,
Zhang Yongle,
Pan Yaoqi,
Ruan Renjie,
Xiao Longqiang,
Hou Linxi
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5608
Subject(s) - chemistry , cyclooctene , catalysis , substituent , arrhenius equation , selectivity , activation energy , photochemistry , ligand (biochemistry) , hammett equation , reaction rate constant , medicinal chemistry , organic chemistry , kinetics , quantum mechanics , biochemistry , receptor , physics
A series of dimolybdenum metal catalysts with different ligand have been successfully synthesized and used to catalyze the epoxidation of alkenes to generate epoxides by using tert‐butyl‐hydroperoxide (TBHP) as oxidant. The reaction condition was optimized by the adjustment of some key parameters, such as, temperature, to target high catalytic performance. The oxidation of cyclooctene gave 95.00% conversion and almost 100.00% selectivity. Kinetic study of the oxidation of cyclooctene under different temperature was taken out, indicating the reaction have good catalytic performance. Furthermore, it is calculated from the Arrhenius equation that different functional groups affect the activation energy of the reaction. The electron donor group substituent on the liagnd increases the catalytic activity by reducing the activation energy, and vice versa. Finally, a possible catalytic mechanism has been proposed by measuring the electronic absorption spectrum of the reaction.