Claims
- 1. An oxidation process that comprises the step of oxidizing a substrate with oxygen in the presence of an oxidation catalyst comprising a crystalline complex of manganese with an N,N′-disalicylidenediamine.
- 2. The oxidation process of claim 1, wherein m+1 mole of said N,N′-disalicylidenediamine is coordinated to m mole of said manganese and m is an integer of not less than 1.
- 3. The oxidation process of claim 1, wherein said N,N′-disalicylidenediamine is at least one member selected from the group consisting of N,N′-disalicylidene C2-8 alkylenediamines and N,N′-disalicylidene C6-12 arylenediamines.
- 4. The oxidation process of claim 1, wherein said complex is shown by the following formula:
- 5. The oxidation process of claim 1, wherein said complex is a complex of manganese having a valence of 2 to 4 with an N,N′-disalicylidene C2-5 alkylenediamine.
- 6. The oxidation process of claim 1, wherein the melting point of said complex is 190 to 240° C.
- 7. The oxidation process of claim 1, wherein the melting point of said complex is 200 to 220° C., m+1 mole of said N,N′-disalicylidenediamine is coordinated to m mole of said manganese, m is an integer of not less than 1, and the infrared spectrum of said complex indicates an absorption peak for the hydroxyl group.
- 8. A process according to claim 1, wherein the water content of a reaction system is not more than 1% by weight.
- 9. An oxidation process that comprises the step of oxidizing a substrate with oxygen in the presence of an oxidation catalyst comprising a crystalline complex of manganese with an N,N′-disalicylidenediamine and a basic nitrogen-containing compound.
- 10. The oxidation process of claim 9, wherein said nitrogen-containing compound is an alicyclic or aromatic cyclic base having a plurality of nitrogen atoms.
- 11. The oxidation process of claim 10, wherein the ring of said cyclic base contains at least one nitrogen atom.
- 12. The oxidation process of claim 10, wherein said cyclic base has 2 to 6 nitrogen atoms.
- 13. The oxidation process of claim 10, wherein said cyclic base is at least one member selected from the group consisting of 5- to 10-membered mono- and heterocyclic compounds, azabicyclo C7-12 alkanes, azatricyclo C8-16 alkanes, and aromatic heterocyclic compounds having (i) at least one nitrogen atom as a hetero atom, and (ii) an amino group or an N-substituted amino group or both.
- 14. The oxidation process of claim 9, wherein said nitrogen-containing compound is a tertiary amine.
- 15. The oxidation process of claim 9, wherein the proportion of said nitrogen-containing compound relative to said complex is 0.1/1 to 500/1 (molar ratio).
- 16. A process according to claim 9, wherein the water content of a reaction system is not more than 1% by weight.
- 17. A process for producing ketoisophorone or a derivative thereof, which comprises oxidizing β-isophorone or a derivative thereof with molecular oxygen in the presence of an oxidation catalyst comprising a crystalline complex of manganese with an N,N′-disalicylidenediamine and, optionally, a basic nitrogen-containing compound.
- 18. A process according to claim 17, wherein the amount of the complex is 1×10−5 to 1×10−2 mole relative to 1 mole of β-isophorone or a drivative thereof.
- 19. A process according to claim 17, wherein said oxidation is carried out in a ketone solvent.
Priority Claims (1)
Number |
Date |
Country |
Kind |
151643/1998 |
Jun 1998 |
JP |
|
Parent Case Info
[0001] This application is a divisional of co-pending application No. 09/323,225, filed on Jun. 1, 1999, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. § 120; and this application claims priority of application No. 10-151643 filed in Japan on Jun. 1, 1998 under 35 U.S.C. § 119.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09323225 |
Jun 1999 |
US |
Child |
09832104 |
Apr 2001 |
US |