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Citation: Kexing Zeng, Zhipeng Huang, Jie Yang, Yanlong Gu. Silica-supported policresulen as a solid acid catalyst for organic reactions[J]. Chinese Journal of Catalysis, ;2015, 36(9): 1606-1613. doi: 10.1016/S1872-2067(15)60910-X shu

Silica-supported policresulen as a solid acid catalyst for organic reactions

Kexing Zeng ^a ,
Zhipeng Huang ^a ,
Jie Yang ^a ,
Yanlong Gu ^a,b,,

1.
a Key Laboratory for Large-Format Battery, Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, Chinab;

Corresponding author: Yanlong Gu,
Received Date: 25 April 2015
Available Online: 22 May 2015
Fund Project: 国家自然科学基金(21173089, 21373093) (21173089, 21373093) 中央高校基本科研业务费专项资金(2014ZZGH019) (2014ZZGH019)

A new type of solid catalyst was prepared by coating a thin layer of policresulen, an inexpensive polymer prepared via condensation of 2-hydroxy-4-methylbenzenesulfonic acid and formaldehyde that has been used as commercially available drug, onto the surface of silica. The policresulen component is insoluble in many organic solvents and can be adsorbed on silica with the aid of hydrogen bonding. The obtained silica/policresulen composite showed remarkable catalytic activity for various organic reactions. In model reactions, the catalyst can be recycled several times without significant loss of activity. The salient features of using this acid catalyst in organic reactions include cost-effectiveness, simple and time-efficient preparation, and the convenience of controlling the acid loading on the solid.
- Acid catalysis,
- Solid acid,
- Policresulen,
- Covalent bond-free immobilization,
- oxa-Pictet-Spengler reaction
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