SE7605928L - WAY TO MAKE THE 1.5 AND 1,8-DIAMINON AGREEMENTS - Google Patents

WAY TO MAKE THE 1.5 AND 1,8-DIAMINON AGREEMENTS

Info

Publication number
SE7605928L
SE7605928L SE7605928A SE7605928A SE7605928L SE 7605928 L SE7605928 L SE 7605928L SE 7605928 A SE7605928 A SE 7605928A SE 7605928 A SE7605928 A SE 7605928A SE 7605928 L SE7605928 L SE 7605928L
Authority
SE
Sweden
Prior art keywords
aqueous
compounds
water
catalytic hydrogenation
diaminon
Prior art date
Application number
SE7605928A
Other languages
Swedish (sv)
Inventor
H U Blank
F Durholz
G Skipka
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of SE7605928L publication Critical patent/SE7605928L/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
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/06—Compounds containing nitro groups bound to a carbon skeleton having nitro groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
    • C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
    • C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst

Landscapes

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

Abstract

These known substances are obtained by catalytic hydrogenation of the corresponding dinitronaphthalenes. While it was previously necessary to employ pure dinitro compounds because the technical-grade crude products are only hydrogenated slowly and incompletely, it is now possible to prepare them starting from crude dinitro compounds. These compounds are first treated with water or an aqueous solution with an alkaline reaction, if appropriate with addition of a solvent which is not miscible with water, such as benzene, naphthalene or halohydrocarbons, at a temperature between 0 DEG C and the boiling point of the mixture, the aqueous, or aqueous/organic, solvent phase is then separated off, and the product is subjected to conventional catalytic hydrogenation.
SE7605928A 1975-05-27 1976-05-25 WAY TO MAKE THE 1.5 AND 1,8-DIAMINON AGREEMENTS SE7605928L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752523351 DE2523351C2 (en) 1975-05-27 1975-05-27 Process for the preparation of 1,5- and 1,8-diaminonaphthalene

Publications (1)

Publication Number Publication Date
SE7605928L true SE7605928L (en) 1976-11-28

Family

ID=5947485

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7605928A SE7605928L (en) 1975-05-27 1976-05-25 WAY TO MAKE THE 1.5 AND 1,8-DIAMINON AGREEMENTS

Country Status (7)

Country Link
BE (1) BE842223A (en)
CH (1) CH622240A5 (en)
DE (1) DE2523351C2 (en)
FR (1) FR2312487A1 (en)
GB (1) GB1499699A (en)
IT (1) IT1061311B (en)
SE (1) SE7605928L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1345888A1 (en) 2000-12-22 2003-09-24 Bayer Aktiengesellschaft Method for the production of 1,5-naphthalenediamine
DE10209644A1 (en) 2002-03-05 2003-09-18 Bayer Ag Process for the preparation of a dinitronaphthalene isomer mixture with a high proportion of 1,5-dinitronaphthalene
DE10224463A1 (en) 2002-06-03 2003-12-11 Bayer Ag Process for the preparation of 5-nitro-3,4-dihydro-1 (2H) -naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalenediisocyanate
CN1687011B (en) * 2005-03-31 2010-05-05 聂天明 Method for refining amino naphthalenes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026944A (en) * 1974-08-10 1977-05-31 Bayer Aktiengesellschaft Process for manufacturing diaminonaphthalene

Also Published As

Publication number Publication date
BE842223A (en) 1976-11-26
DE2523351C2 (en) 1982-12-02
GB1499699A (en) 1978-02-01
DE2523351A1 (en) 1976-12-09
FR2312487A1 (en) 1976-12-24
FR2312487B1 (en) 1980-11-07
IT1061311B (en) 1983-02-28
CH622240A5 (en) 1981-03-31

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