MX166300B - PROCESS TO OXIDIZE A CYCLIC KETONE TO A LACTONE - Google Patents
PROCESS TO OXIDIZE A CYCLIC KETONE TO A LACTONEInfo
- Publication number
- MX166300B MX166300B MX378986A MX378986A MX166300B MX 166300 B MX166300 B MX 166300B MX 378986 A MX378986 A MX 378986A MX 378986 A MX378986 A MX 378986A MX 166300 B MX166300 B MX 166300B
- Authority
- MX
- Mexico
- Prior art keywords
- hydrogen peroxide
- solution
- polybasic acid
- lactone
- anhydride
- Prior art date
Links
- 150000002596 lactones Chemical class 0.000 title abstract 5
- 150000003997 cyclic ketones Chemical class 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 10
- 150000007519 polyprotic acids Polymers 0.000 abstract 4
- 238000009835 boiling Methods 0.000 abstract 2
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 abstract 1
- 150000008065 acid anhydrides Chemical class 0.000 abstract 1
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical class CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- -1 cyclic anhydride Chemical class 0.000 abstract 1
- 239000012442 inert solvent Chemical class 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
Landscapes
- Pyrane Compounds (AREA)
- Furan Compounds (AREA)
Abstract
La presente invención se refiere a un proceso para oxidar una cetona cíclica a la correspondiente lactona, comprendiendo las etapas de: a) formar una primera solución incorporando una cetona cíclica conteniendo desde 4 hasta 30 átomos de carbono cíclicos, un anhídrido cíclico de un ácido polibásico, preferentemente un anhídrido de ácido maléico, succínico, ftálico o un ftálico substituído y un solvente inerte que tenga un punto de ebullición substancialmente mayor que el punto de ebullición de la correspondiente lactona, siendo incorporado el anhídrido en una cantidad suficiente para mantener a la primera solución substancialmente anhídrida; b) incorporar entre 0.3 y 2 moles de peróxido de hidrógeno por mol de cetona en la primera solución, siendo incorporado el peróxido de hidrógeno a una velocidad controlada para evitar acumular un excedente substancial de peróxido de hidrógeno en la mezcla de reacción, para mantener al solvente líquido y preferentemente mantener la temperatura de la priemra reacción entre 30 y 100 grados C; c) incorporar una cantidad catalítica de un catalizador básico en la primera solución, dicha cantidad catalítica preferentemente equivalente a menos de 50 moles por ciento del peróxido de hidrógeno empleado y suficiente para permitir completar el peróxido de hidrógeno dentro de menos de cuatro horas, convirtiendo así por lo menos parte de la cetona cíclica a la lactona correspondiente y por lo menos parte del anhídrido del ácido polibásico al correspondiente ácido polibásico, y d) recuperar la lactona como un destilado del producto de la etapa (b) para dejar como residuo una solución del ácido polibá sico en el solvente.The present invention relates to a process for oxidizing a cyclic ketone to the corresponding lactone, comprising the steps of: a) forming a first solution incorporating a cyclic ketone containing from 4 to 30 cyclic carbon atoms, a cyclic anhydride of a polybasic acid , preferably a maleic, succinic, phthalic or substituted phthalic anhydride and an inert solvent having a boiling point substantially higher than the boiling point of the corresponding lactone, the anhydride being incorporated in an amount sufficient to maintain the first substantially anhydrous solution; b) incorporate between 0.3 and 2 moles of hydrogen peroxide per mole of ketone in the first solution, with hydrogen peroxide being incorporated at a controlled rate to avoid accumulating a substantial surplus of hydrogen peroxide in the reaction mixture, to maintain the liquid solvent and preferably keep the temperature of the first reaction between 30 and 100 degrees C; c) incorporating a catalytic amount of a basic catalyst in the first solution, said catalytic amount preferably equivalent to less than 50 mol percent of the hydrogen peroxide used and sufficient to allow the completion of the hydrogen peroxide within less than four hours, thus converting at least part of the cyclic ketone to the corresponding lactone and at least part of the polybasic acid anhydride to the corresponding polybasic acid, and d) recovering the lactone as a distillate from the product of step (b) to leave a solution of the Polybasic acid in the solvent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78826685A | 1985-10-17 | 1985-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX166300B true MX166300B (en) | 1992-12-29 |
Family
ID=25143953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX378986A MX166300B (en) | 1985-10-17 | 1986-09-22 | PROCESS TO OXIDIZE A CYCLIC KETONE TO A LACTONE |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6293287A (en) |
| MX (1) | MX166300B (en) |
-
1986
- 1986-09-22 MX MX378986A patent/MX166300B/en unknown
- 1986-09-26 JP JP22633086A patent/JPS6293287A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6293287A (en) | 1987-04-28 |
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