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A novel quaternary ammonium salt synthesis with dimethyl carbonate as alkylating agent

PING BO ZHANG1, MING MING FAN1,* , XIAO QIAO WEI1, YAN NI ZENG1

Affiliation

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China

Abstract

Dimethyl carbonate (DMC) could be used as an environmentally friendly alkylating agent to replace the highly toxic dimethyl sulfate for quaternary ammonium salt synthesis. In this work, a novel quaternary ammonium salt was obtained via reaction between DMC and distearyl ester of methyldiethanolamine synthesized from stearic acid and N-methyl diethanolamine (MDEA). The optimum synthesis conditions for distearyl ester of methyldiethanolamine were found as mixing the reactants stearic acid and MDEA with molar ratio of 2.10 at about 430 K for 5 h. The quaternization of distearyl ester of methyldiethanolamine with DMC was investigated, and the structure of the quaternary product was measured using IR and MS..

Keywords

Quaternary ammonium salt, Dimethyl carbonate, N-methyl diethanolamine, Stearic acid.

Citation

PING BO ZHANG, MING MING FAN, XIAO QIAO WEI, YAN NI ZENG, A novel quaternary ammonium salt synthesis with dimethyl carbonate as alkylating agent, Optoelectronics and Advanced Materials - Rapid Communications, 5, 2, February 2011, pp.164-166 (2011).

Submitted at: Nov. 11, 2010

Accepted at: Feb. 17, 2011