Process for preparing disubstituted urea and carbamate compounds from amines, carbon dioxide, and epoxides
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United States of America Patent
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Mar 1, 2016
Grant Date -
May 14, 2015
app pub date -
Dec 20, 2013
filing date -
Dec 20, 2013
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Abstract
The present disclosure relates to a method for preparing a disubstituted urea and carbamate compounds simultaneously through a one-pot reaction of an amine, carbon dioxide and an alkylene oxide compound in the presence of an ionic liquid-based complex catalyst system containing indium. In accordance with the present disclosure, a disubstituted urea and carbamate compounds can be prepared simultaneously at high yield. In addition, the ionic liquid-based catalyst containing indium according to the present disclosure is economical because it can be reused several times.
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