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Licensed Unlicensed Requires Authentication Published by De Gruyter May 1, 2013

Study on the Synthesis and Properties of Novel Alkyl Methylnaphthalene Sulfonate Surfactants

Part 1 Synthesis of Monoalkylated Methylnaphthalene Intermediates for Surfactants

Untersuchung über Synthese und Eigenschaften von neuartigen Alkylmethylnaphtalinsulfonat-Tensiden. Teil 1: Synthese von monoalkylierten Methylnaphtalin-Intermediärverbindungen für Tenside
Zhao Zhongkui , Li Zongshi , Qiao Weihong and Cheng Lubo


A series of high purity monoalkyl methylnaphthalene intermediates were prepared by alkylation of β-methylnaphthalene with a series of different chain lengths of n-bromoalkanes. Gas chromatography and gas chromatography-mass spectrometry were used as appropriate methods for this technology. The reaction conditions were optimized. The effect of dosage of catalysts, the molar ratio of β-methyl naphthalene to bromoalkane and of the solvent to β-methyl naphthalene, the reaction time as well as the temperature had also been investigated in detail. The optimal reaction conditions of alkylation have been achieved, and the reaction results were discussed. Based on the optimal reaction conditions, a series of monoalkylmethylnaphthalene intermediates, hexyl-, octyl-, decyl-, dodecyl-, tetra-decyl-methyl-naphthalenes had been prepared.


Eine Reihe von hochreinen monoalkylierten Methylnaphtalin-Intermediärverbindungen wurde durch Alkylierung von β-Methylnaphtalin mit n-Bromalkanen verschiedener Kettenlänge gewonnen. Zur Bestimmung und Quantifizierung wurden die Gaschromatographie und Gaschromatographie-Massenspektrometrie als geeignete Methoden eingesetzt. Die Reaktionsbedingungen wurden optimiert. Der Einfluß der Katalysatordosierung, des molaren Verhältnisses von β-Methylnaphtalin zu n-Bromalkan, des Lösungsmittels zu β-Methylnaphtalin, der Reaktionszeit und der Reaktionstemperatur wurde eingehend untersucht. Optimierte Reaktionsbedingungen der Alkylierung wurden gefunden und deren Ergebnisse diskutiert. Mit Hilfe der optimierten Reaktionsbedingungen konnte eine Serie von monoalkylierten Methylnaphtalin-Intermediärverbindungen, Hexyl-, Octyl-, Decyl-, Dodecyl-, Tetradecylmethylnaphtalin dargestellt werden.

Correspondence to Dr. Zhao Zhongkui State Key Laboratory of Fine Chemicals, Dalian University of Technology, 158 Zhongshan Road, Dalian, 116012, P.R. China, Tel.: 86-4 11-8 99 38 78, Fax: 86-4 11-3 68 32 29, E-mail: ,

Zhao Zhongkui was born in 1977. Now he is a PhD candidate at Dalian University of Technology. His main field of research is the synthesis and physical chemistry of surfactants. He has published fifteen papers.

Prof. Li Zongshi was born in 1936. He obtained a BS degree from Dalian University of Technology in 1960. Since then he has been working in the department of fine chemicals at Dalian University of Technology. His focus is on synthesis of surfactants and their applications.

Qiao Weihong was born in 1968. She obtained an MSc from Dalian University of Technology in1994 and a Ph D from the same university in 2000. Since 1994, she has been teaching and working in Dalian University of Technology. Her main field of research is the synthesis and physicial chemistry of surfactants.

Prof. Cheng Lubo was born in 1933, he obtained a BS from Dalian University of Technology in 1955. Since then he has been working in the department of fine chemicals at Dalian University of Technology. His focus is on synthesis of surfactants, dyes and their applications.


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Received: 2003-11-18
Published Online: 2013-05-01
Published in Print: 2004-04-01

© 2004, Carl Hanser Publisher, Munich

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