Abstract
두개의 3-메틸이미다졸리움(3-methylimidazolium) 고리가 여러 길이의 에틸렌글리콜(ethylene glycol) 사슬로 연결된 비스 3-메틸이미다졸리움 이온성액체를 효율적으로 합성해내는 청정제법을 기술하였다. 여러 길이의 에틸렌 글리콜 사슬을 포함하는 토실레이트(tosylate) 화합물과 3-메틸이미다졸(3-methylimidazole)을 무용매 조건에서 가열함으로써 기존 방법보다 짧은 시간 반응시켜 원하는 비스 3-메틸이미다졸리움(bis(3-methylimidazolium)) 이온성 액체를 높은 수율로 얻을 수 있었다. 이는 휘발성 용매의 사용을 극소화하고 짧은 반응시간과 함께 효율적 반응이 이루어지는 청정제법이다. A green procedure is described for the preparation of a series of ionic liquids where two 3-methylimidazolium cations were bridged with ethylene glycol chain as linkers. Diethylene glycol-bis(3-methylimidazolium) ditosylate, triethylene glycolbis(3-methylimidazolium) ditosylate, and tetraethylene glycol-bis(3-methylimidazolium) ditosylate were heated with 3-methylimidazole under solvent-free condition to give the corresponding bis(3-methylimidazolium) ditosylate ionic liquids efficiently in a short time.
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