Zhou WY, Tian P, Chen Y, He MY, Chen Q, Chen ZX. Effect of L-cysteine on the oxidation of cyclohexane catalyzed by manganeseporphyrin.
Bioorg Med Chem Lett 2015;
25:2356-9. [PMID:
25937009 DOI:
10.1016/j.bmcl.2015.04.020]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 03/30/2015] [Accepted: 04/06/2015] [Indexed: 11/24/2022]
Abstract
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.
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