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Received: 2004-10-24

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.5 P.373~377


Synthesis of acetals and ketals catalyzed by tungstosilicic acid supported on active carbon

Author(s):  YANG Shui-jin, DU Xin-xian, HE Lan, SUN Ju-tang

Affiliation(s):  Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China; more

Corresponding email(s):   yangshuijin@163.com

Key Words:  Tungstosilicic acid, Aceta, Ketal, Active carbon, Catalysis

YANG Shui-jin, DU Xin-xian, HE Lan, SUN Ju-tang. Synthesis of acetals and ketals catalyzed by tungstosilicic acid supported on active carbon[J]. Journal of Zhejiang University Science B, 2005, 6(12): 373~377.

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author="YANG Shui-jin, DU Xin-xian, HE Lan, SUN Ju-tang",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

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%T Synthesis of acetals and ketals catalyzed by tungstosilicic acid supported on active carbon
%A YANG Shui-jin
%A DU Xin-xian
%A HE Lan
%A SUN Ju-tang
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 5
%P 373~377
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer

T1 - Synthesis of acetals and ketals catalyzed by tungstosilicic acid supported on active carbon
A1 - YANG Shui-jin
A1 - DU Xin-xian
A1 - HE Lan
A1 - SUN Ju-tang
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 5
SP - 373
EP - 377
%@ 1673-1581
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PB - Zhejiang University Press & Springer
ER -

Catalytic activity of activated carbon supported tungstosilicic acid in synthesizing 2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane, 2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane, cyclohexanone ethylene ketal, cyclohexanone 1,2-propanediol ketal, butanone ethylene ketal, butanone 1,2-propanediol ketal, 2-phenyl-1,3-dioxolane, 4-methyl-2-phenyl-1,3-dioxolane, 2-propyl-1,3-dioxolane, 4-methyl-2-propyl-1,3-dioxolane was reported. It has been demonstrated that activated carbon supported tungstosilicic acid is an excellent catalyst. Various factors involved in these reactions were investigated. The optimum conditions found were: molar ratio of aldehyde/ketone to glycol is 1/1.5, mass ratio of the catalyst used to the reactants is 1.0%, and reaction time is 1.0 h. Under these conditions, the yield of 2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane is 61.5%, of 2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane is 69.1%, of cyclohexanone ethylene ketal is 74.6%, of cyclohexanone 1,2-propanediol ketal is 80.1%, of butanone ethylene ketal is 69.5%, of butanone 1,2-propanediol ketal is 78.5%, of 2-phenyl-1,3-dioxolane is 56.7%, of 4-methyl-2-phenyl-1,3-dioxolane is 86.2%, of 2-propyl-1,3-dioxolane is 87.5%, of 4-methyl-2-propyl-1,3-dioxolane is 87.9%.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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Prof.M.Gholizadeh@Mashhad University<mostafa_gholizadeh@yahoo.com>

2010-05-31 20:10:24

Dear Prof.
I am a professor in organic chemistry at chm.Dept. of Mashhad university of IRAN.We have need to the following abow references(No:1,9,10,11,15,16)for our research.I am looking forward hearing you soon.
The Best Regards:
Mostafa Gholizadeh

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