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
Application number
Other languages
French (fr)
Inventor
Bouchardy Ferdinand Gros
Original Assignee
Ferdinand Gros & Bouchardy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ferdinand Gros & Bouchardy filed Critical Ferdinand Gros & Bouchardy
Publication of CH85392A publication Critical patent/CH85392A/en

Links

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

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  • 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)

REVENDICATION Procédé pour la préparation de dérivés trinitrés des crésols, suivant lequel on traite les dinitrocrésols sans emploi d'acide sulfuri que par un mélange d'acide nitrique concentré saturé d'anhydride nitrique N20,. SOUS-REVENDICATION: Procédé selon la revendication, dans lequel on opère en maintenant la température, au moins au début, au-dessous de 40 0 C. CLAIM Process for the preparation of trinitrated derivatives of cresols, according to which the dinitrocresols without the use of sulfuric acid are treated only with a mixture of concentrated nitric acid saturated with nitric anhydride N20 ,. SUB-CLAIM: Process according to claim, in which the operation is carried out while maintaining the temperature, at least at the start, below 40 ° C.
CH85392D 1919-09-01 1919-09-01 Process for the preparation of trinitrated derivatives of cresols. CH85392A (en)

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)

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