GB716418A - Reduction of aromatic nitrogen compounds and process of effecting reduction - Google Patents

Reduction of aromatic nitrogen compounds and process of effecting reduction

Info

Publication number
GB716418A
GB716418A GB32817/52A GB3281752A GB716418A GB 716418 A GB716418 A GB 716418A GB 32817/52 A GB32817/52 A GB 32817/52A GB 3281752 A GB3281752 A GB 3281752A GB 716418 A GB716418 A GB 716418A
Authority
GB
United Kingdom
Prior art keywords
naphthol
amino
dihydroxynaphthalene
acid
reduction
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.)
Expired
Application number
GB32817/52A
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.)
Allied Corp
Original Assignee
Allied Chemical and Dye Corp
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 Allied Chemical and Dye Corp filed Critical Allied Chemical and Dye Corp
Publication of GB716418A publication Critical patent/GB716418A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C291/00—Compounds containing carbon and nitrogen and having functional groups not covered by groups C07C201/00 - C07C281/00
    • C07C291/02—Compounds containing carbon and nitrogen and having functional groups not covered by groups C07C201/00 - C07C281/00 containing nitrogen-oxide bonds
    • C07C291/08—Azoxy compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C241/00—Preparation of compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
    • C07C241/02—Preparation of hydrazines
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C245/00—Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond
    • C07C245/02—Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides
    • C07C245/06—Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings
    • C07C245/08—Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings with the two nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings, e.g. azobenzene

Landscapes

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

Abstract

In the reduction process of the parent Specification the naphthoquinone promoter is replaced by one of the following: a - or b -naphthol, a dihydroxynaphthalene or aminonaphthol (including alkylamino, phenylamino and acylamino naphthols) in which the two substituents are in quinone-forming positions or 1 : 8 positions, 5-amino-2-naphthol, 2-naphthol - 4 - sulphonic acid, or 2 : 3 - oxynaphthoic acid. The reaction conditions are as in the parent Specification. In the examples, in which the reducing agent is sodium methoxide, the naphthols used as promoters are: 1 : 4-dihydroxynaphthalene, 4 - amino - 1 - naphthol, 2 - amino - 1 - naphthol, 1 - amino - 2 - naphthol, 1 - amino - 2 - naphthol - 4 - sulphonic acid, 2-naphthol - 4 - sulphonic acid a - naphthol, 1-amino - 8 - naphthol, 1 : 8 - dihydroxynaphthalene, b - naphthol, 5 - amino - 2 - naphthol and 2 : 3-oxynaphthoic acid. The products obtained are azobenzene, azoxybenzene and hydrazobenzene. Besides nitrobenzene the following may be reduced: o- and m-nitrotoluenes, o - and m - nitrochlorobenzenes, o-nitroanisole, o - nitrophenetole, o - nitrobenzoic acid and o - nitrobenzenesulphonic acid. Other specified naphthol promoters are 4-amino - 1 - naphthol - 2 - sulphonic acid, 2 : 3-dihydroxynaphthalene, 2 : 3 - dihydroxynaphthalene - 6 - sulphonic acid and 4-anilino-1-naphthol.
GB32817/52A 1952-01-08 1952-12-29 Reduction of aromatic nitrogen compounds and process of effecting reduction Expired GB716418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US716418XA 1952-01-08 1952-01-08

Publications (1)

Publication Number Publication Date
GB716418A true GB716418A (en) 1954-10-06

Family

ID=22102631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32817/52A Expired GB716418A (en) 1952-01-08 1952-12-29 Reduction of aromatic nitrogen compounds and process of effecting reduction

Country Status (1)

Country Link
GB (1) GB716418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5808154A (en) * 1989-04-05 1998-09-15 Toyo Ink Manufacturing Co., Ltd. Process for the production of an aromatic hydrazo compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5808154A (en) * 1989-04-05 1998-09-15 Toyo Ink Manufacturing Co., Ltd. Process for the production of an aromatic hydrazo compound

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