GB801534A - A process for the preparation of an unsymmetrical dialkylhydrazine - Google Patents

A process for the preparation of an unsymmetrical dialkylhydrazine

Info

Publication number
GB801534A
GB801534A GB3509256A GB3509256A GB801534A GB 801534 A GB801534 A GB 801534A GB 3509256 A GB3509256 A GB 3509256A GB 3509256 A GB3509256 A GB 3509256A GB 801534 A GB801534 A GB 801534A
Authority
GB
United Kingdom
Prior art keywords
nickel
palladium
hydrogen
dialkylhydrazine
unsymmetrical
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
GB3509256A
Inventor
John Wilbur Churchill
John Fessler Haller
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.)
Olin Corp
Original Assignee
Olin 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 Olin Corp filed Critical Olin Corp
Priority to GB3509256A priority Critical patent/GB801534A/en
Publication of GB801534A publication Critical patent/GB801534A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C243/12—Hydrazines having nitrogen atoms of hydrazine groups bound to acyclic carbon atoms
    • C07C243/14—Hydrazines having nitrogen atoms of hydrazine groups bound to acyclic carbon atoms of a saturated carbon skeleton
    • 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

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

Unsymmetrical dialkylhydrazines are prepared by reacting hydrogen at superatmospheric pressure with the corresponding dialkylnitrosamine in the presence of a nickel, copper chromite or palladium hydrogenation catalyst. Reaction temperatures of 0 DEG to 100 DEG C. are suitable for the nickel or palladium catalysts and those from 0 DEG to 175 DEG C. are suitable for the copper chromite catalyst. Raney nickel and palladium supported on alumina are preferred forms of the nickel and palladium catalysts, respectively. Preferred hydrogen pressures are between 1200 and 2000 p.s.i.g. The reaction may be carried out with or without aqueous or non-aqueous solvents. For continuous working a dialkylnitrosoamine is made to flow downwards through a catalyst bed contained in a vertically arranged cylindrical vessel, in which suitable superatmospheric hydrogen pressures are maintained; unreacted hydrogen and dialkylnitrosamine are separated from the dialkylhydrazine and are recycled. The examples describe the preparation of dimethylhydrazine, methylethylhydrazine, diethylhydrazine, di-n-propylhydrazine and di-n-butylhydrazine.
GB3509256A 1956-11-16 1956-11-16 A process for the preparation of an unsymmetrical dialkylhydrazine Expired GB801534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3509256A GB801534A (en) 1956-11-16 1956-11-16 A process for the preparation of an unsymmetrical dialkylhydrazine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3509256A GB801534A (en) 1956-11-16 1956-11-16 A process for the preparation of an unsymmetrical dialkylhydrazine

Publications (1)

Publication Number Publication Date
GB801534A true GB801534A (en) 1958-09-17

Family

ID=10373703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3509256A Expired GB801534A (en) 1956-11-16 1956-11-16 A process for the preparation of an unsymmetrical dialkylhydrazine

Country Status (1)

Country Link
GB (1) GB801534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167588A (en) * 1959-12-01 1965-01-26 Allied Chem Catalytic hydrogenation of nitrosodialkylamines to produce unsymmetrical dialkylhydrazines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167588A (en) * 1959-12-01 1965-01-26 Allied Chem Catalytic hydrogenation of nitrosodialkylamines to produce unsymmetrical dialkylhydrazines

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