公开(公告)号：US20220220086A1

公开(公告)日：2022-07-14

申请号：US17568840

申请日：2022-01-05

Applicant: DAEGU CATHOLIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Dong Wook KANG ,  Jong Yun JANG ,  Seong Jeong LEE ,  Jeong In KIM ,  Ju Yeon BAE ,  Hyeon Ho JEON ,  Hee Yoon RYU

IPC: C07D257/04

Abstract: The present invention provides a method for producing high-purity 5-methyl-1H-tetrazole in high yield.

公开(公告)号：US20210347639A1

公开(公告)日：2021-11-11

申请号：US17274539

申请日：2019-09-04

Applicant: DAEGU CATHOLIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Sang Ryul LEE ,  Kyoung Chol KIM ,  Ja Young PARK ,  Ji Hyeong KIM ,  Jeong In KIM ,  Seok Ju LEE ,  Jongyun JANG ,  Seongjeong LEE ,  Mingi CHU ,  Dong Wook KANG

IPC: C01B21/086

Abstract: A method for producing a bis(fluorosulfonyl)imide lithium salt is disclosed. The method includes the steps of: (a) reacting bis(chlorosulfonyl)imide with NH4F(HF)n (n=0-10) to prepare ammonium bis(fluorosulfonyl)imide; and (b) reacting the ammonium bis(fluorosulfonyl)imide with a lithium base, wherein in at least one of steps (a) and (b), after the reaction, a process of adding an alkoxy trialkyl silane to the reaction solution to remove a fluorine anion is performed.