CH85392A - Process for the preparation of trinitrated derivatives of cresols. - Google Patents
Process for the preparation of trinitrated derivatives of cresols.Info
- Publication number
- CH85392A CH85392A CH85392DA CH85392A CH 85392 A CH85392 A CH 85392A CH 85392D A CH85392D A CH 85392DA CH 85392 A CH85392 A CH 85392A
- Authority
- CH
- Switzerland
- Prior art keywords
- cresols
- preparation
- trinitrated
- derivatives
- carried out
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 150000001896 cresols Chemical class 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- IUOFDOCUNLJHFO-UHFFFAOYSA-N 2-methyl-3,4-dinitrophenol Chemical class CC1=C(O)C=CC([N+]([O-])=O)=C1[N+]([O-])=O IUOFDOCUNLJHFO-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- OMBRFUXPXNIUCZ-UHFFFAOYSA-N dioxidonitrogen(1+) Chemical compound O=[N+]=O OMBRFUXPXNIUCZ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/14—Preparation of nitro compounds by formation of nitro groups together with reactions not involving the formation of nitro groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Procédé pour la préparation de dérivés trinitrés des crésols. La présente invention a pour objet un procédé pour la préparation des trinitrocrésols par la réaction connue de l'acide nitrique concentré sur les dinitrocrésols. Ce procédé se distingue cependant des procédés connus jus qu'ici et dans lesquels la réaction est faite en présence d'acide sulfurique, par le fait que la nitration est effectuée sans emploi de cet acide en traitant les dinitrocrésols par un mélange d'acide nitrique concentré saturé d'an hydride nitrique<B>N205.</B>
On opère le mieux en maintenant la tem pérature au moins au début, inférieure à 40 0 C. L'opération peut être faite sur chacun des dinitrocrésols pure; elle peut aussi être effec tuée sur des mélanges de dinitrocrésols, en particulier sur les mélanges obtenus par l'ac tion du peroxyde d'azote sur les crésols en présence d'un liquide indifférent servant de dissolvant d'au moins un des corps réagis- sants.
Si l'on veut opérer la séparation des divers isomères obtenus, on peut utiliser les solu bilités dans les dissolvants organiques usuels.
Voici à titre d'exemple de quelle manière on peut exécuter ce procédé: 8,2 parties en poids d'un mélange de di- riitrocrésols sont mises en réaction avec 14 parties en poids d'un mélange d'acide nitrique concentré et d'anhydride nitrique comportant 70 % de NOs H et 30 0% de N20,. La masse en réaction est d'abord maintenue à basse température, ne dépassant en tout cas pas 40 0; puis on chauffe sans toutefois dépasser 100 0 jusqu'à ce que la réaction soit terminée. On sépare les produits de la réaction par de l'eau et on obtient 7,7 parties en poids de trini- trocrésols.
Process for the preparation of trinitrated derivatives of cresols. The present invention relates to a process for the preparation of trinitrocresols by the known reaction of concentrated nitric acid with dinitrocresols. This process differs, however, from the processes known hitherto and in which the reaction is carried out in the presence of sulfuric acid, by the fact that the nitration is carried out without using this acid by treating the dinitrocresols with a mixture of nitric acid. concentrate saturated with nitric anhydride <B> N205. </B>
The best operation is to maintain the temperature at least at the start, below 40 ° C. The operation can be carried out on each of the pure dinitrocresols; it can also be carried out on mixtures of dinitrocresols, in particular on the mixtures obtained by the action of nitrogen peroxide on the cresols in the presence of an indifferent liquid serving as a solvent for at least one of the reactants. health.
If it is desired to operate the separation of the various isomers obtained, it is possible to use the solu bilities in the usual organic solvents.
The following is an example of how this process can be carried out: 8.2 parts by weight of a mixture of diitrocresols are reacted with 14 parts by weight of a mixture of concentrated nitric acid and nitric anhydride comprising 70% of NOs H and 30 0% of N20 ,. The reaction mass is first kept at low temperature, in any case not exceeding 40 0; then heating without exceeding 100 0 until the reaction is complete. The reaction products are separated with water and 7.7 parts by weight of trintrocresols are obtained.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH85392T | 1919-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH85392A true CH85392A (en) | 1920-10-01 |
Family
ID=4341709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH85392D CH85392A (en) | 1919-09-01 | 1919-09-01 | Process for the preparation of trinitrated derivatives of cresols. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH85392A (en) |
-
1919
- 1919-09-01 CH CH85392D patent/CH85392A/en unknown
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