Effect of L-cysteine on the oxidation of cyclohexane catalyzed by manganeseporphyrin.
Effect of L-cysteine as the cocatalyst on the oxidation of cyclohexane by tert-butylhydroperoxide (TBHP) catalyzed by manganese tetraphenylporphyrin (MnTPP) has been investigated. The results showed that L-cysteine could moderately improve the catalytic activity of MnTPP and significantly increase the selectivity of cyclohexanol. Different from imidazole and pyridine, the L-cysteine may perform dual roles in the catalytic oxidation of cyclohexane. Besides as the axial ligand for MnTPP, the L-cysteine could also react with cyclohexyl peroxide formed as the intermediate to produce alcohol as the main product.
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China; R&D Center, Jiangsu Yabang Pharmaceutical Group, Changzhou 213200, China.
Wei-You
WY
Zhou
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China.
Peng
P
Tian
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China.
Yong
Y
Chen
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China. Electronic address: hemy_cczu@126.com.
Ming-Yang
MY
He
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China.
Qun
Q
Chen
R&D Center, Jiangsu Yabang Pharmaceutical Group, Changzhou 213200, China.
Zai Xin
ZX
Chen
D002384:Catalysis; D003510:Cyclohexanes / Q000737:chemistry*; D003545:Cysteine / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D011166:Porphyrins / Q000737:chemistry*
D003510:Cyclohexanes; D011166:Porphyrins; D008345:Manganese; C506365:Cyclohexane; D003545:Cysteine
Biomimetic catalysis; Cocatalyst; Manganese tetra-phenylporphyrin; Selective oxidation; l-Cysteine