Synthesis of 2,4,6-Trimethylbenzaldehyde

化学工业与工程

Chemcial Industry and Engineering

2007, Vol. 24

Issue (5) :381-384 DOI:

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Synthesis of 2,4,6-Trimethylbenzaldehyde

WANG Fei~1,ZHANG Xiao-xing~1,FENG Rong-xiu~2,SONG Jian~2(1.College of Pharmaceutical Science and Biotechnology,Tianjin University,Tianjin 300072,China;2.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)

(1.College of Pharmaceutical Science and Biotechnology,Tianjin University,Tianjin 300072,China;2.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

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Abstract 2,4,6-trimethylbenzaldehyde was synthesized through Gattermann-Koch reaction,and the reaction condition was optimized.The effects of reaction temperature,pressure of carbon monoxide,the amount of hydrochloric acid,and the promoter were discussed.The reaction can be promoted by titanium(Ⅳ) chloride(TiCl_4) and ethyl ether.The optimized condition is:the molar ratio of 2,4,6-trimethylbenzaldehyde to anhydros aluminum chloride(AlCl_3) is 3.08,molar ratio of AlCl_3 to concentrated aqueous hydrochloride is 550,weight ratio of anhydros AlCl_3 to TiCl_4 is 45,pressure of carbon monoxide is 1.06—1.48 MPa,at 26—(28 ℃),for 20 h,yield of 86.86%.

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Received 2007-09-15; published 2007-09-15

Cite this article:

WANG Fei~1,ZHANG Xiao-xing~1,FENG Rong-xiu~2,SONG Jian~2.Synthesis of 2,4,6-Trimethylbenzaldehyde[J] Chemcial Industry and Engineering, 2007,V24(5): 381-384