公开(公告)号：US20240300915A1

公开(公告)日：2024-09-12

申请号：US18574536

申请日：2023-01-09

申请人： LG Chem, Ltd.

发明人： Sang Weon Roh ,  Byung Soo Kang ,  Min Su Hwang ,  Jeong Ae Yoon ,  Won Jae Lee ,  Su Jeong Kim

IPC分类号： C07D327/04 ,  C07C327/36

CPC分类号： C07D327/04 ,  C07C327/36

摘要： A manufacturing method capable of improving the yield and properties of a cyclic sulfonic acid ester derivative compound includes (A) reacting a compound represented by Formula 1 and thioacetic acid to prepare a compound represented by Formula 2, and (B) subjecting the compound represented by Formula 2 to an oxidative cyclization reaction to prepare a compound represented by Formula 3:






wherein m and R1 to R8 are described herein.

公开(公告)号：US11618687B2

公开(公告)日：2023-04-04

申请号：US16955270

申请日：2019-04-09

申请人： LG Chem, Ltd.

发明人： Byung Soo Kang ,  Hyun Jik Lee ,  Won Jae Lee ,  Chui Haeng Lee ,  Young Min Lim

IPC分类号： C01D15/00

摘要： The present invention relates to a method for preparing a lithium bis(fluorosulfonyl)imide salt, including a step of dissolving bis(chlorosulfonyl)imide in an organic solvent in a non-glass vessel to prepare a first reaction solution; a step of injecting lithium fluoride (LiF) to the first reaction solution in the non-glass vessel and refluxing while heating to prepare a second reaction solution; a step of separating a product including a lithium bis(fluorosulfonyl)imide salt and the organic solvent from the second reaction solution; and a step of obtaining the lithium bis(fluorosulfonyl)imide salt in a solid phase from the product, wherein the organic solvent is at least one or more selected from the group consisting of ethyl acetate, butyl acetate, chloroform, dichloromethane, dichloroethane, benzene, xylene and acetonitrile.