US 12,371,399 B2
N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof
Yanliang Wang, Fujian (CN); Wentao Xiao, Fujian (CN); Yuyuan Wu, Fujian (CN); and Jinchi Lin, Fujian (CN)
Assigned to FUJIAN GOLDEN DRAGON RARE EARTH Co., Ltd., Longyan (CN)
Appl. No. 17/639,137
Filed by FUJIAN GOLDEN DRAGON RARE EARTH Co., Ltd., Longyan (CN)
PCT Filed Jun. 29, 2021, PCT No. PCT/CN2021/103175
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2023/272497, PCT Pub. Date Jan. 5, 2023.
Prior Publication US 2023/0331659 A1, Oct. 19, 2023
Int. Cl. C07C 233/49 (2006.01); C07C 233/47 (2006.01); C22B 3/32 (2006.01); C22B 59/00 (2006.01)
CPC C07C 233/49 (2013.01) [C07C 233/47 (2013.01); C22B 3/32 (2021.05); C22B 59/00 (2013.01)] 23 Claims
 
1. An N,N-dihydrocarbonyl amino carboxylic acid with a structure represented by Formula I:

OG Complex Work Unit Chemistry
wherein, R1 and R2 are each independently a linear or branched, saturated or unsaturated, and unsubstituted C7-C30 alkyl, alkenyl or alkynyl, or a linear or branched, saturated or unsaturated, and substituted C7-C30 alkyl, alkenyl or alkynyl, wherein the substituents of the alkyl, alkenyl or alkynyl are each independently any one or a combination of at least two selected from the group consisting of halogen, hydroxyl, carboxyl, phenyl, phenoxy, amino, nitro, cyano and thiol;
R3 is a linear or branched, saturated or unsaturated, and unsubstituted C6-C30 alkyl, alkenyl or alkynyl, or a linear or branched, saturated or unsaturated, and substituted C6-C30 alkyl, alkenyl or alkynyl, wherein the substituents of the alkyl, alkenyl or alkynyl are each independently any one or a combination of at least two selected from the group consisting of halogen, hydroxyl, carboxyl, phenyl, phenoxy, amino, nitro, cyano and thiol;
X is H or OH; and
n is a natural number from 1 to 10.