BE334680A - - Google Patents
Info
- Publication number
- BE334680A BE334680A BE334680DA BE334680A BE 334680 A BE334680 A BE 334680A BE 334680D A BE334680D A BE 334680DA BE 334680 A BE334680 A BE 334680A
- Authority
- BE
- Belgium
- Prior art keywords
- carbides
- turpentine
- catalyst
- desc
- mixture
- Prior art date
Links
- 150000001247 metal acetylides Chemical class 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 11
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229940085790 synthetic camphor Drugs 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- 241000779819 Syncarpia glomulifera Species 0.000 description 7
- 239000001739 pinus spp. Substances 0.000 description 7
- 229940036248 turpentine Drugs 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical compound C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- REPVLJRCJUVQFA-UHFFFAOYSA-N (-)-isopinocampheol Natural products C1C(O)C(C)C2C(C)(C)C1C2 REPVLJRCJUVQFA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- DALDUXIBIKGWTK-UHFFFAOYSA-N benzene;toluene Chemical compound C1=CC=CC=C1.CC1=CC=CC=C1 DALDUXIBIKGWTK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CKDOCTFBFTVPSN-UHFFFAOYSA-N borneol Natural products C1CC2(C)C(C)CC1C2(C)C CKDOCTFBFTVPSN-UHFFFAOYSA-N 0.000 description 1
- 229940116229 borneol Drugs 0.000 description 1
- -1 bornyl oxalate Chemical compound 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- DTGKSKDOIYIVQL-UHFFFAOYSA-N dl-isoborneol Natural products C1CC2(C)C(O)CC1C2(C)C DTGKSKDOIYIVQL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Description
<Desc/Clms Page number 1>
"Perfectionnements apportés à la fabrication du camphre synthétique par l'emploi d'un catalyseur liquide ".
Dans le brevet principal, il a été décrit l'emploi d'un catalyseur liquide pour la fabrication du camphre synthéti que et il a été particulièrement préconisé l'emploi comme
<Desc/Clms Page number 2>
catalyseur, des carbures chlorés:tétrachloréthane, trichloré- thylène, tétrachlorure de carbone, chloroforme, etc ....
Il a été notamment exposé que l'action de ces catalyseurs était plus rapide que l'action d'autres liquides moins bons catalyseurs, tels que la: benzène cristallisable .il a été indiqué en plus que les produits obtenus dans la réaction avec l'aide du tétrachloréthane et du trichloréthylène ,sont presque exempts de composés huileux et presque exclusivement composés d'oxalate de bornyl .
Bien que les réactions catalyituqes obtenues avec les carbures simples :benzène cristallisable , toluène et au- tres carbures de cette série montrent les défauts signalés , tels que réactions moins rapides, obtention d'un bornéol moins pur, il n'en subsiste pas moins que l'absence de chlore dans ces carbures présente un réel avantage , * la non possibi- lité de formation d'acide chlorhydrique évite l'isomération en dipentène d'une partie de la térébenthine mise en oeuvre , qui est provoquée marne par une trace de cet acide , d'où résul- te un rendement supérieur en comptant sur la térébenthine mi- se en oeuvre .Enfin l'absence de l'acide chlorhydrique pré- sente aussi un avantage au point de vue de l'appareillage
Or,
il a été reconnu que l'on peut corriger les dé- fauts de ces carbures simples en augmentant leur proportion relative dans le mélange des composés mis en oeuvre, et c'est ce nouveau mède opératoire qui constitue l'objet de la présen- te addition . Plus la proportion de ces carbures simples est grande dans le mélange , plus la réaction se fait vivement et plus la quantité de térébenthine entrée en réaction est grande.
En forçant la quantité de ces carbures catalyseurs l'on arrive à faire entrer la presque totalité de la térébenthine mise en oeuvre , en combinaison avec l'acide oxalique , ce qui présente un réel avantage .Il va sans dire qu'au lieu d'un seul carbure
<Desc/Clms Page number 3>
homogène ,l'on peut employer comme catalyseurs, des mélanges @ da carbures L'emploi d'un mélange de ce genre peut présenter des avantages pour maintenir constante la température de la réaction
A titre d'exemple de réalisation du procédé ainsi mo- difié , l'on peut chauffer ensemble à 110 0, pendant 6 à 8 heures ,1 partie d'acide oxalique sec, 3 à 4 parties de téré- benthine rectifiée et 8 parties du mélange toluène-benzène .
Na- turellement l'augmentation du catalyseur réalise de bons effets avec les catalyseurs chlorés La proportion de deux parties de catalyseur pour une partie de térébenthine est très convenable .
Le traitement indiqué dans le brevet principal res- te le même ,mais le rendement se trouve notablement amélioré et peut dépasser 70% de la térébenthine mise en oeuvre, l'acide oxalique non entré en combinaison est récupéré intact .
**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.
<Desc / Clms Page number 1>
"Improvements in the manufacture of synthetic camphor by the use of a liquid catalyst".
In the main patent, it was described the use of a liquid catalyst for the manufacture of synthetic camphor and it was particularly recommended the use as
<Desc / Clms Page number 2>
catalyst, chlorinated carbides: tetrachloroethane, trichlorethylene, carbon tetrachloride, chloroform, etc ....
In particular, it has been stated that the action of these catalysts was faster than the action of other less good catalyst liquids, such as: crystallizable benzene. In addition, it was indicated that the products obtained in the reaction with the using tetrachloroethane and trichlorethylene, are almost free of oily compounds and almost exclusively composed of bornyl oxalate.
Although the catalytic reactions obtained with the simple carbides: crystallizable benzene, toluene and other carbides of this series show the defects indicated, such as slower reactions, obtaining a less pure borneol, the fact remains that the absence of chlorine in these carbides presents a real advantage, * the non-possibility of hydrochloric acid formation prevents the isomerization into dipentene of part of the turpentine used, which is caused by a trace of this acid, from which results a higher yield by counting on the turpentine employed. Finally the absence of hydrochloric acid also presents an advantage from the point of view of the apparatus.
Gold,
it has been recognized that it is possible to correct the faults of these simple carbides by increasing their relative proportion in the mixture of the compounds used, and it is this new operating method which constitutes the object of the present invention. addition. The greater the proportion of these simple carbides in the mixture, the more keenly the reaction and the greater the quantity of turpentine which has entered into the reaction.
By forcing the quantity of these catalyst carbides one manages to bring in almost all of the turpentine used, in combination with oxalic acid, which presents a real advantage. It goes without saying that instead of a single carbide
<Desc / Clms Page number 3>
homogeneous, it is possible to use as catalysts mixtures of carbides The use of a mixture of this kind can have advantages for maintaining constant the temperature of the reaction
As an example of an embodiment of the process thus modified, it is possible to heat together at 110 0, for 6 to 8 hours, 1 part of dry oxalic acid, 3 to 4 parts of rectified turpentine and 8 parts. toluene-benzene mixture.
Naturally, the increase in catalyst achieves good effects with chlorinated catalysts. The ratio of two parts of catalyst to one part of turpentine is very suitable.
The treatment indicated in the main patent remains the same, but the yield is considerably improved and can exceed 70% of the turpentine used, the oxalic acid not entered into combination is recovered intact.
** ATTENTION ** end of DESC field can contain start of CLMS **.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE334680A true BE334680A (en) |
Family
ID=13239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE334680D BE334680A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE334680A (en) |
-
0
- BE BE334680D patent/BE334680A/fr unknown
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