公开(公告)号：US20160304480A1

公开(公告)日：2016-10-20

申请号：US15098905

申请日：2016-04-14

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Dong Won HWANG ,  Pravin P. UPARE ,  Jong San CHANG ,  Young Kyu HWANG ,  U Hwang LEE ,  Do Young HONG

IPC: C07D307/42 ,  C07D307/48 ,  C07D307/50 ,  C07D307/36

CPC classification number: C07D307/42 ,  C07D307/36 ,  C07D307/48 ,  C07D307/50

Abstract: The present invention relates to a method for preparing for a furan derivative from biomass, comprising step (1) of preparing 5-hydroxymethylfurfural by reacting biomass and a solid acid catalyst in butanol; and step (2) of preparing a furan derivative by reacting the butanol solution of 5-hydroxymethylfurfural, obtained in step (1), with a hydrogenation catalyst.

Abstract translation: 本发明涉及从生物质制备呋喃衍生物的方法，包括通过使生物质与丁醇中的固体酸催化剂反应制备5-羟甲基糠醛的步骤（1） 和步骤（2）通过使步骤（1）中获得的5-羟甲基糠醛的丁醇溶液与氢化催化剂反应来制备呋喃衍生物。

公开(公告)号：US20160016151A1

公开(公告)日：2016-01-21

申请号：US14869138

申请日：2015-09-29

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Dong Won HWANG ,  Jong-San CHANG ,  Pravin P. UPARE ,  U-Hwang LEE ,  Young Kyu HWANG

IPC: B01J23/14 ,  C07D319/12 ,  C01G19/02

CPC classification number: B01J23/14 ,  B01J21/04 ,  B01J21/063 ,  B01J21/066 ,  B01J21/08 ,  B01J29/0308 ,  B01J29/405 ,  B01J29/7057 ,  B01J35/0006 ,  B01J35/002 ,  B01J37/031 ,  B01J37/035 ,  C01G19/02 ,  C07D319/10 ,  C07D319/12

Abstract: The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.