NL7708542A - PROCEDURE FOR PREPARING HYDRAZOBENZENE. - Google Patents

PROCEDURE FOR PREPARING HYDRAZOBENZENE.

Info

Publication number
NL7708542A
NL7708542A NL7708542A NL7708542A NL7708542A NL 7708542 A NL7708542 A NL 7708542A NL 7708542 A NL7708542 A NL 7708542A NL 7708542 A NL7708542 A NL 7708542A NL 7708542 A NL7708542 A NL 7708542A
Authority
NL
Netherlands
Prior art keywords
reactor
hydrazobenzene
alkali metal
hydrogenation
preparing
Prior art date
Application number
NL7708542A
Other languages
Dutch (nl)
Original Assignee
Dynamit Nobel 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
Priority claimed from DE19762634861 external-priority patent/DE2634861C2/en
Priority claimed from DE19762634862 external-priority patent/DE2634862C2/en
Priority claimed from DE19772708914 external-priority patent/DE2708914A1/en
Application filed by Dynamit Nobel Ag filed Critical Dynamit Nobel Ag
Publication of NL7708542A publication Critical patent/NL7708542A/en

Links

Classifications

    • 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
    • C07C243/00—Compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
    • C07C243/10—Hydrazines
    • C07C243/22—Hydrazines having nitrogen atoms of hydrazine groups bound to carbon atoms of six-membered aromatic rings

Landscapes

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

Abstract

The preparation of hydrazobenzene by a catalytic alkaline hydrogenation of nitrobenzene with water vapour in alcoholic solution is effected using an alkali that is an alkali metal alcoholate (alkoxide) and/or an alkali metal hydroxide, hydrogenation pressures of >/= 1 bar and temperatures of up to 120 DEG C, and keeping the reaction mixture in turbulent agitation. Industrial practice is by means of an apparatus comprising a temperature controllable reactor and a pump-equipped recirculation loop emanating from the reactor in the region of the liquid column and ending in nozzles which disperse the reacting material finely into the gas space of the reactor.
NL7708542A 1976-08-03 1977-08-02 PROCEDURE FOR PREPARING HYDRAZOBENZENE. NL7708542A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19762634861 DE2634861C2 (en) 1976-08-03 1976-08-03 Process for the preparation of hydrazobenzene
DE19762634862 DE2634862C2 (en) 1976-08-03 1976-08-03 Process for the preparation of hydrazobenzene
DE19772708914 DE2708914A1 (en) 1977-03-02 1977-03-02 Prepn. of hydrazobenzene by catalytic redn. of nitrobenzene - with hydrogen in alkaline alcoholic soln. under turbulent motion

Publications (1)

Publication Number Publication Date
NL7708542A true NL7708542A (en) 1978-02-07

Family

ID=27186938

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7708542A NL7708542A (en) 1976-08-03 1977-08-02 PROCEDURE FOR PREPARING HYDRAZOBENZENE.

Country Status (9)

Country Link
JP (1) JPS5318522A (en)
CH (1) CH629752A5 (en)
CS (1) CS204007B2 (en)
ES (2) ES461272A1 (en)
FR (1) FR2360563A1 (en)
GB (1) GB1560004A (en)
HU (1) HU178508B (en)
IT (1) IT1115946B (en)
NL (1) NL7708542A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833605A1 (en) * 1978-07-31 1980-02-14 Dynamit Nobel Ag METHOD FOR PRODUCING HYDRAZOBENZOLS BY CATALYTIC HYDRATION OF NITROBENZOLES

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063980A (en) * 1957-07-09 1962-11-13 Gen Aniline & Film Corp Process for reducing aromatic nitrogen compounds

Also Published As

Publication number Publication date
FR2360563A1 (en) 1978-03-03
HU178508B (en) 1982-05-28
IT1115946B (en) 1986-02-10
GB1560004A (en) 1980-01-30
CS204007B2 (en) 1981-03-31
FR2360563B1 (en) 1983-09-09
ES470767A1 (en) 1979-02-01
ES461272A1 (en) 1978-10-01
JPS5318522A (en) 1978-02-20
CH629752A5 (en) 1982-05-14

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed