Synthesis of 4,4'-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids

耿艳楼; 胡利彦; 赵新强; 安华良; 王延吉

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Synthesis of 4,4'-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids

Updated：2026-01-06

- Synthesis of 4,4'-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids
- Chinese Journal of Chemical Engineering Vol. 17, Issue 5, Pages: 756-760(2009)
- Affiliations：
  
  Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, Hebei University of Technology,Tianjin,China,300130
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2009
- Accepted：
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GENG Yanlou, HU Liyan, ZHAO Xinqiang, AN Hualiang, WANG Yanji . Synthesis of 4,4'-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids[J]. , 2009, 17(5): 756-760.
DOI：

GENG Yanlou, HU Liyan, ZHAO Xinqiang, AN Hualiang, WANG Yanji . Synthesis of 4,4'-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids[J]. , 2009, 17(5): 756-760. DOI：

摘要

Abstract

The synthesis of methylene diphenyl dimethylcarbamate(4

4'-MDC) from methyl N-phenyl carbonate (MPC) and formaldehyde (HCHO) was conducted in the presence of sulfonic acid-functionalized ionic liquids (ILs) as dual solvent-catalyst.The influences of the kind of anion in the ionic liquids

reaction conditions and the recycle of the ionic liquid on 4

4'-MDC synthesis reaction were investigated.In addition

the acid strength of ILs was determined by the Hammett method with UV-visible spectroscopy

and the acid strength-catalytic activity relationship was correlated.The activity estimation results showed that HSO

-bmimCF

was the optimal dual solvent-catalyst.Under the suitable reaction conditions of 70℃

40 min

molar ratio of

MPC

HCHO

=10/1 and mass ratio of

ILs

MPC

=4.5/1

the yield of 4

4'-MDC based on HCHO was 89.9% and the selectivity of 4

4'-MDC with respect to MPC was 74.9%.Besides

[HSO

-bmim

]

was reused four times after being purified and no significant loss in the catalytic activity was observed.

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