METHOD FOR PREPARING 1,3-CYCLOPENTANEDIOL

WIPO Patent Application WO/2021/086089

A1

The present invention relates to a method for preparing 1,3-cyclopentanediol by adding a ruthenium catalyst, from which the surface oxide layer has been removed, to 4-hydroxy-2-cyclopentenone. The method is simple since 1,3-cyclopentanediol can be prepared in a single step through the use of the catalyst, without forming 3-hydroxycyclopentanone, which is a reaction intermediate. Moreover, the method can not only shorten the reaction time, but can also improve the yield of 1,3-cyclopentanediol.

WO/1994/017022	A PROCESS FOR RECOVERING DIMETHYL TEREPHTHALATE AND ETHYLENE GLYCOL
WO/2017/170077	ALKOXY MAGNESIUM, METHOD FOR PRODUCING ALKOXY MAGNESIUM, SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION USE, CATALYST FOR OLEFIN POLYMERIZATION USE, AND METHOD FOR PRODUCING OLEFIN POLYMER
JP5448018	Antioxidant method of ethylene glycol

JEONG MEE HYE (KR)
YONG DA KYOUNG (KR)
HA JI MIN (KR)
PARK KI HYUN (KR)

PCT/KR2020/014970

May 06, 2021

October 29, 2020

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KOLON INC (KR)

C07C29/94; B01J23/46; B01J37/08; C07C29/143; C07C35/06; C07C45/59; C07C49/597

CN106866364A	2017-06-20
CN106866345A	2017-06-20
CN106866331A	2017-06-20
JP2015024969A	2015-02-05
KR20150067788A	2015-06-19

LI GUANGYI, LI NING, ZHENG MINGYUAN, LI SHANSHAN, WANG AIQIN, CONG YU, WANG XIAODONG, ZHANG TAO: "Industrially scalable and cost-effective synthesis of 1,3-cyclopentanediol with furfuryl alcohol from lignocellulose", GREEN CHEMISTRY, vol. 18, no. 12, 14 March 2014 (2014-03-14), pages 3607 - 3613, XP055787391, DOI: 10.1039/C6GC00341A

PANKOREA PATENT AND LAW FIRM (KR)

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