公开(公告)号：US09682912B2

公开(公告)日：2017-06-20

申请号：US14915564

申请日：2014-08-28

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Jin Ku Cho ,  Sang Yong Kim ,  Do Hoon Lee ,  Jae Won Jeong

IPC: C07C51/00 ,  B01J31/04 ,  C07C51/573 ,  C07C53/126 ,  B01J21/18 ,  B01J31/02 ,  B01J31/08

CPC classification number: C07C51/00 ,  B01J21/18 ,  B01J31/0229 ,  B01J31/04 ,  B01J31/08 ,  B01J31/10 ,  B01J2231/76 ,  B01J2231/766 ,  B01J2531/002 ,  C07C51/573 ,  C07C53/126 ,  Y02E50/343

Abstract: Provided is a method for preparing levulinic acid using a solid acid catalyst in the presence of an ethylene glycol-based compound. The levulinic acid according to the present invention can be prepared by using a linear or cyclic ethylene glycol-based compound as a solvent and preparing the levulinic acid from fructose in the presence of the solid acid catalyst at a reaction temperature of 100 to 200° C., thereby reducing the dependency on petroleum in response to greenhouse gas emission regulations. Also, a high yield of levulinic acid can be obtained from fructose, and the solvent and the catalyst can be efficiently separated, collected, and reused after the reaction has completed.

公开(公告)号：US09273016B2

公开(公告)日：2016-03-01

申请号：US14136629

申请日：2013-12-20

Applicant: Korea Institute of Industrial Technology

Inventor： Yong Jin Kim ,  Vivek Mishra ,  Guang Meang Son ,  Jin Ku Cho ,  Baek Jin Kim

IPC: C07D263/04 ,  C07D263/22 ,  C07C269/04 ,  C07C273/18

CPC classification number: C07D263/22 ,  C07C269/04 ,  C07C273/1836 ,  C07C2101/14 ,  C07C2601/14 ,  Y02P20/582 ,  C07C275/26 ,  C07C271/24 ,  C07C271/28 ,  C07C275/28 ,  C07C275/40

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.

Abstract translation: 本公开内容涉及通过胺，二氧化碳和烯化氧化合物在含有铟的离子液体基络合物催化剂体系存在下同时进行二取代的脲和氨基甲酸酯化合物的制备方法。 根据本公开，可以高收率同时制备二取代的脲和氨基甲酸酯化合物。 此外，根据本公开的含有铟的离子液体催化剂是经济的，因为它可以重复使用几次。