Waste-Free and Highly Effective Catalytic System for the Oxidation of Cysteine to Cystine

A new three-component catalytic system, water/ionic liquid/metal phthalocyanine complex, was studied for the oxidition of cysteine to prepare cystine. It was found that the water/ 1-n-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF₄])/iron (II) phthalocyanine (FeIIPc) system exhibited an exce...

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Bibliographic Details
Published in:Catalysis letters 2010-04, Vol.135 (3-4), p.291-294
Main Authors: Zhao, Xinhua, Kong, Aiguo, Zhang, Xinhua, Shan, Chongchong, Ding, Hanming, Shan, Yongkui
Format: Article
Language:English
Subjects:
Catalysis
Catalytic activity
Chemistry
Chemistry and Materials Science
Coordination compounds
Cysteine
Cystine
Exact sciences and technology
General and physical chemistry
Industrial Chemistry/Chemical Engineering
Ionic liquids
Metal phthalocyanines
Organometallic Chemistry
Oxidation
Oxidation-reduction reaction
Oxygen
Phthalocyanins
Physical Chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Thiols
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Summary:A new three-component catalytic system, water/ionic liquid/metal phthalocyanine complex, was studied for the oxidition of cysteine to prepare cystine. It was found that the water/ 1-n-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF₄])/iron (II) phthalocyanine (FeIIPc) system exhibited an excellent catalytic activity in the oxidition of cysteine. Cystine was obtained with 98% isolated yield in 12 h at the temperature of 80 °C. Further more, the catalytic system can be easily recovered and recycled in the following run without apparent reduction in catalytic activity. Graphical Abstract A novel homogeneous and recyclable catalytic system was applied in the selective oxidation of cysteine to cystine with clean, inexpensive molecular oxygen as oxidant. [graphic removed]
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-010-0289-0