Method for producing alkaline earth metal formate

Patent metadata

Field	Value
Publication number	US-2024043367-A1
Application number	US-202118043928-A
Country	US
Kind code	A1
Filing date	Aug 30, 2021
Priority date	Sep 3, 2020
Publication date	Feb 8, 2024
Grant date	—

Abstract

Provided is a method for producing an alkaline earth metal formate, the method including a first step of reacting hydrogen and carbon dioxide with a carbonate or hydrogen carbonate of an alkaline earth metal using a homogeneous catalyst in the presence of a solvent in a two-phase system in which an organic phase and an aqueous phase are present in a separated state in the solvent to produce an alkaline earth metal formate.

First claim

1 . A method for producing an alkaline earth metal formate, the method comprising:
a first step of reacting hydrogen and carbon dioxide with a carbonate or hydrogen carbonate of an alkaline earth metal using a homogeneous catalyst in the presence of a solvent in a two-phase system in which an organic phase and an aqueous phase are present in a separated state in the solvent to produce a formate of an alkaline earth metal.

2 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the method further includes a second step of separating a solution including the homogeneous catalyst from the reaction solution obtained by the first step, by partitioning.

3 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the alkaline earth metal is calcium.

4 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the homogeneous catalyst contains at least one metal selected from ruthenium, iridium, iron, nickel, and cobalt.

5 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the organic phase contains at least one selected from toluene, dioxane, tetrahydrofuran, ethyl acetate, methylcyclohexane, and cyclopentyl methyl ether.

6 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the homogeneous catalyst is a metal complex catalyst, and a ligand of the metal complex catalyst is further added.

7 . The method for producing an alkaline earth metal formate according to claim 1 , wherein the homogeneous catalyst is at least one selected from a ruthenium complex represented by the following formula (1), a tautomer or stereoisomer thereof, and a salt compound of the ruthenium complex, tautomer or stereoisomer:

wherein R 0 represents a hydrogen atom or an alkyl group,
Q 1 each independently represents CH 2 , NH or O,
R 1 each independently represents an alkyl group or an aryl group (provided that when Q 1 represents NH or O, at least one of R 1 represents an aryl group),
A each independently represents CH, CR 5 or N, R 5 represents an alkyl group, an aryl group, an aralkyl group, an amino group, a hydroxy group or an alkoxy group,
X represents a halogen atom,
n represents 0 to 3, and
when more than one L are present, L each independently represents a neutral or anionic ligand.

8 . The method for producing an alkaline earth metal formate according to claim 7 , wherein a ligand represented by the following formula (4) is further added:

wherein R 0 represents a hydrogen atom or an alkyl group,
Q 2 each independently represents NH or O,
R 3 each independently represents an aryl group,
A each independently represents CH, CR 5 or N, and R 5 represents an alkyl group, an aryl group, an aralkyl group, an amino group, a hydroxy group or an alkoxy group.

9 . The method for producing an alkaline earth metal formate according to claim 1 , wherein a quaternary ammonium salt is further used as a phase transfer catalyst in the first step.

Assignees

• Nitto Denko Corp

Inventors

• Hirano Makoto
• Matsuda Hirokazu
• Pidko Evgeny Alexandrovich
• Filonenko Georgy Alexandrovich
• Rebreyend Christophe

Classifications

• C07C51/02 Primary

  from salts of carboxylic acids · CPC title

• C07C51/15

  by reaction of organic compounds with carbon dioxide, e.g. Kolbe-Schmitt synthesis · CPC title

• C07C51/41 Primary

  Preparation of salts of carboxylic acids ({C07C51/093 - C07C51/34 take precedence} preparation of soap C11D) · CPC title

• B01J31/2409

  with more than one complexing phosphine-P atom · CPC title

• B01J31/189

  containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand · CPC title