FR2348188A1 - Amination of aromatic cpds. with hydroxylamine - in presence of sulphuric acid, carboxylic acid and ferrous sulphate - Google Patents

Amination of aromatic cpds. with hydroxylamine - in presence of sulphuric acid, carboxylic acid and ferrous sulphate

Info

Publication number
FR2348188A1
FR2348188A1 FR7710887A FR7710887A FR2348188A1 FR 2348188 A1 FR2348188 A1 FR 2348188A1 FR 7710887 A FR7710887 A FR 7710887A FR 7710887 A FR7710887 A FR 7710887A FR 2348188 A1 FR2348188 A1 FR 2348188A1
Authority
FR
France
Prior art keywords
aromatic
hydroxylamine
h2so4
carboxylic acid
amination
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7710887A
Other languages
French (fr)
Other versions
FR2348188B1 (en
Inventor
Francesco Minisci
Massimo Stolfi
Saverio Frigerio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACNA Chimica Organica SpA
Original Assignee
ACNA Chimica Organica SpA
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 ACNA Chimica Organica SpA filed Critical ACNA Chimica Organica SpA
Publication of FR2348188A1 publication Critical patent/FR2348188A1/en
Application granted granted Critical
Publication of FR2348188B1 publication Critical patent/FR2348188B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/02—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of hydrogen atoms by amino groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Prepn. of aromatic amines comprises reacting an aromatic cpd. having >=1 free posn. with hydroxylamine in presence of a redox system comprising conc. H2SO4, an aliphatic carboxylic acid and FeSO4. The prodts. are useful as intermediates for dyes, insecticides, antioxidants and rubber additives, and in the photographic field, etc. The process can be applied to all kinds of aromatic cpds., including those with strong electron-donor or -acceptor substits., and can be controlled (by adjusting the acidity) to give either ortho/para or meta substitution. In an example, reaction of anisole with NH2OH in presence of FeSO4, 100% acetic acid and 50% H2SO4 gives anisidine with an o=m=p ratio of 29.7:3. 1:67.2. Increasing the H2SO4 concn. to 96% gives an o=m=p ratio of 15:27:58.
FR7710887A 1976-04-15 1977-04-12 Amination of aromatic cpds. with hydroxylamine - in presence of sulphuric acid, carboxylic acid and ferrous sulphate Granted FR2348188A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2235076A IT1059128B (en) 1976-04-15 1976-04-15 PROCESS FOR THE PREPARATION OF AAROMATIC AMINES

Publications (2)

Publication Number Publication Date
FR2348188A1 true FR2348188A1 (en) 1977-11-10
FR2348188B1 FR2348188B1 (en) 1980-02-15

Family

ID=11195054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710887A Granted FR2348188A1 (en) 1976-04-15 1977-04-12 Amination of aromatic cpds. with hydroxylamine - in presence of sulphuric acid, carboxylic acid and ferrous sulphate

Country Status (4)

Country Link
BE (1) BE853667A (en)
DE (1) DE2716242A1 (en)
FR (1) FR2348188A1 (en)
IT (1) IT1059128B (en)

Also Published As

Publication number Publication date
BE853667A (en) 1977-10-17
FR2348188B1 (en) 1980-02-15
DE2716242A1 (en) 1977-10-27
IT1059128B (en) 1982-05-31

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