Use of certain manganese-accumulating plants for carrying out organic chemistry reactions

Patent metadata

Field	Value
Publication number	US-10702860-B2
Application number	US-201314416404-A
Country	US
Kind code	B2
Filing date	Jul 23, 2013
Priority date	Jul 23, 2012
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

The use, after heat treatment, of manganese accumulating plants for carrying out chemical reactions.

First claim

The invention claimed is:

1. A method for implementing an organic synthesis reaction, comprising the following steps:
a) preparing a composition containing at least one polymetallic agent, metals of which are selected from metals originating from a plant or a part of a plant, said composition containing less than 10% by weight of organic matter according to the following steps:
i) dehydrating a plant or a part of a plant, said plant or said part of said plant belonging to a genus selected from the group consisting of Alyxia, Azolla, Beauprea, Beaupreopsis, Bridelia, Crotalaria, Dicranopteris, Dipteris, Eugenia, Gleichenia, Gossia, Macadamia, Maytenus, Pinus, Phytolacca, Spermacone, Stenocarpus, Virotia and Grevillea , that has accumulated manganese (Mn) and at least a metal selected from the group consisting of magnesium (Mg), iron (Fe), calcium (Ca) and aluminum (Al), and obtaining a dried plant or dried part of said plant;
ii) grinding the dried plant or dried part of said plant obtained from step i), and obtaining a grinded mixture;
iii) thermally treating the grinded mixture obtained for step ii) and obtaining the composition containing at least one polymetallic agent, said composition comprising Mn and at least a metal selected from the group consisting of Mg, Fe, Ca and Al;

b) adding to a reaction mixture the composition obtained from step a); and
c) implementing an organic synthesis reaction selected from the group consisting of radical oxidations, epoxidations, oxidations of alcohols located in an alpha position of a heterocyclic or carbocyclic aromatic group or of a double bond, oxidizing cleavage of polyols, oxidation of benzamines, and oxidizing aromatic dehydrogenation of unsaturated and/or conjugated cyclic derivatives optionally comprising a heteroatom, wherein the composition is a catalyst for the organic synthesis reaction.

2. The method according to claim 1 , wherein the polymetallic agent is a catalyst comprising manganese (Mn) having a degree of oxidation (II) (Mn (II)), or a degree of oxidation (III) (Mn (III)).

3. The method according to claim 1 , wherein the polymetallic agent is a reagent comprising manganese (Mn) having a degree of oxidation (III) (Mn (III)), or a degree of oxidation (IV) (Mn (IV)).

4. The method according to claim 1 , wherein the thermally treating of step iii) is followed by an acid treatment step iv) and optionally oxidation and/or electrolysis of a plant or a part of a plant selected from the group consisting of Grevillea exul ssp. Rubiginosa, Grevillea exul ssp. exul and Grevillea gillivrayi that has accumulated manganese (Mn).

5. The method according to claim 4 , wherein the acid treatment is carried out with hydrochloric acid, sulphuric acid, acetic acid, trifluoromethanesulphonic acid, nitric acid, perchloric acid, phosphoric acid, trifluoroacetic acid or para-toluenesulphonic acid.

6. The method according to claim 1 , wherein the composition is filtered on an inert solid mineral and optionally subsequently purified on an ion-exchange resin.

7. The method according to claim 1 , wherein the concentration of Mn is between 15,000 and 280,000 mg/kg of plant dry weight in dried leaves of the plant Grevillea exul ssp. exul.

8. The method according to claim 1 , wherein the catalysts comprises Mn (II) obtained from extracts of metallophyte plants that are hyperaccumulators of Mn.

9. The method according to claim 1 , wherein the catalysts comprises Mn (III) which can be obtained from a solution comprising extracts of metallophyte plants that are hyperaccumulators of Mn by either:
action of dioxygen dissolved in the solution comprising the extracts, in the presence of OH − ions in said solution comprising the extracts and then to a treatment with an anhydride, or
action of pyrrole optionally substituted in the presence of an aldehyde in order to obtain the formation of a solution comprising a porphinato-manganese complex with a degree of oxidation (II), wherein the porphinato-manganese complex is subjected to action of dioxygen dissolved in said solution comprising the porphinato-manganese complex,
optionally in the presence of one or more co-oxidants for carrying out an organic synthesis reaction.

10. The method according to claim 1 , wherein the catalysts comprise Mn (IV) and contain less than 3% of manganese in the form Mn 3 O 4 or Mn 2 O 3 which can be obtained from a solution comprising extracts of metallophyte plants that are hyperaccumulators of Mn by action of dioxygen dissolved in the solution comprising the extracts, in the presence of OH − ions in said solution and, optionally, by an acid treatment and then to dehydration so as to obtain a reagent comprising manganese with a degree of oxidation (IV) (Mn (IV)).

11. The method according to claim 1 , wherein a reagent comprising Mn (IV) and containing less than 3% of manganese in the form Mn 3 O 4 or Mn 2 O 3 which can be obtained from a solution comprising extracts of a plant or a part of a plant selected from the group consisting of Grevillea exul ssp. Rubiginosa, Grevillea exul ssp. exul and Grevillea gillivrayi by action of dioxygen dissolved in the solution comprising the extracts in the presence of OH − ions in said solution and optionally by an acid treatment and then dehydration is reacted with (3-methoxy 4-hydroxy) benzene methanol under reflux in order to obtain vanillin.

12. The method according to claim 1 , wherein a reagent comprising Mn (IV) and containing less than 3% of manganese in the form Mn 3 O 4 or Mn 2 O 3 which can be obtained from a solution comprising extracts of a plant or a part of a plant selected from the group consisting of Grevillea exul ssp. Rubiginosa, Grevillea exul ssp. exul and Grevillea gillivrayi by action of dioxygen dissolved in the solution comprising the extracts in the presence of OH − ions in said solution and, optionally, by an acid treatment and then dehydration is reacted with geraniol in order to obtain geranial.

13. The method according to claim 1 , wherein the composition comprises manganese (Mn) in the form Mn (II) in a quantity above 25,000 ppm, calcium (Ca), magnesium (Mg), iron (Fe) or aluminium Al(III).

14. The method according to claim 9 , wherein the organic synthesis reaction is a radical oxidation or an oxidation of alkenes.

15. The method according to claim 10 , wherein the organic synthesis reaction is selected from the group consisting of oxidations of alcohols located in alpha position of a heterocyclic or carbocyclic aromatic group or of a double bond, oxidizing cleavage of polyols, oxidation of benzamines, and oxidizing aromatic dehydrogenation of unsaturated and/or conjugated cyclic derivatives optionally comprising a heteroatom.

16. The method according to claim 1 , wherein the composition contains less than 5% by weight of organic matter.

17. The method according to claim 4 , wherein the composition, after acid treatment, has been subjected to at least one treatment selected from the group consisting of filtration, purification resin, oxidation, fixation on a support, chelation, and electrolysis.

18. The method according to claim 1 , wherein said plant is selected from the group consisting of Beauprea gracilis, Beauprea montana, Beaupreopsis paniculata, Garcinia amplexicaulis, Grevillea exul, Grevillea exul ssp. rubiginosa, Grevillea exul ssp. exul Grevillea gillivrayi, Grevillea meissnerimeisneri, Maytenus fournieri drakeana, Maytenus fournieri fournieri, Spermacoce latifolia Aubl, Dicranopteris linearis (synonym: Gleichenia linearis ), Bridelia ferrugin

Assignees

• Centre Nat Rech Scient
• Univ Montpellier 2 Sciences Et Techniques

Inventors

• Grison Claude
• Escande Vincent

Classifications

• B01J37/06 Primary

  Washing {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• B01J37/36

  Biochemical methods · CPC title

• B09C1/10

  microbiologically, {biologically} or by using enzymes · CPC title

• B01J23/34

  Manganese · CPC title

• B01J37/0036

  Grinding · CPC title