US 11,987,549 B2
Preparation method of rhodium octanoate dimer
Jianguo Qin, Shanghai (CN); Cong Wang, Shanghai (CN); Xin Sun, Shanghai (CN); and Fang Ling, Shanghai (CN)
Assigned to SHANGHAI OURCHEM BIO-TECHNOLOGY CO., LTD., Shanghai (CN)
Appl. No. 17/298,956
Filed by SHANGHAI OURCHEM BIO-TECHNOLOGY CO., LTD., Shanghai (CN)
PCT Filed Dec. 11, 2020, PCT No. PCT/CN2020/135742
§ 371(c)(1), (2) Date Jun. 2, 2021,
PCT Pub. No. WO2021/258663, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 202010591490.2 (CN), filed on Jun. 24, 2020.
Prior Publication US 2022/0315518 A1, Oct. 6, 2022
Int. Cl. C07C 51/41 (2006.01)
CPC C07C 51/418 (2013.01) 16 Claims
 
1. A preparation method of a rhodium octanoate dimer, comprising the following steps:
(1) mixing RhCl3 with an alkali metal octanoate uniformly to get a first solution;
(2) adding a reductant into the first solution obtained from step (1) to obtain a first mixture, and heating the first mixture for a reflux reaction to get a second solution wherein the reductant is at least one selected from the group consisting of n-butanol, 2-butanol, isobutanol and n-pentanol;
(3) adding the second solution obtained from step (2) into deionized water while hot to obtain a second mixture, continuing to stir the second mixture, and performing a suction filtration on the second mixture to get a crude product, and
(4) performing a primary washing, a secondary washing, a filtration, and a drying on the crude product obtained from step (3) to get the rhodium octanoate dimer as a green solid.