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GB275377A - A process for the catalytic methylation of ammonia and organic amines - Google Patents

A process for the catalytic methylation of ammonia and organic amines

Info

Publication number
GB275377A
GB275377A GB1524226A GB1524226A GB275377A GB 275377 A GB275377 A GB 275377A GB 1524226 A GB1524226 A GB 1524226A GB 1524226 A GB1524226 A GB 1524226A GB 275377 A GB275377 A GB 275377A
Authority
GB
United Kingdom
Prior art keywords
ammonia
passing
ether
dimethyl ether
over
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
GB1524226A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1524226A priority Critical patent/GB275377A/en
Publication of GB275377A publication Critical patent/GB275377A/en
Expired 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
    • C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
    • C07C209/14—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups
    • C07C209/18—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to carbon atoms of six-membered aromatic rings or from amines having nitrogen atoms bound to carbon atoms of six-membered aromatic rings

Landscapes

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

Abstract

275,377. Mackert, A. June 17, 1926. Methylamino compounds ; dimethyl ether. - Ammonia and primary and secondary amines are methylated by passing ammonia or the amine mixed with dimethyl ether in excess at reduced, ordinary or increased pressure over dehydrating catalysts such as the oxide of aluminium, titanium, zirconium or thorium. The dimethyl ether may be mixed with methyl alcohol or a partial methylation with methyl alcohol may first take place. The ether may be produced in situ from methyl alcohol and used for partially methylating ammonia or an amine by passing the latter with alcohol over the catalyst, the excess of ether being allowed to act in a second stage to complete the methylation. In examples, (1) a mixture of ammonia, primary, secondary and tertiary amines is obtained by passing ammonia and dimethyl ether over heated aluminium oxide; if the product is treated again with dimethyl ether, the final product contains no ammonia; (2) a mixture of mono- and dimethylaniline is obtained by using aniline instead of ammonia, and if this mixture, with or wthout more aniline, is treated again, dimethylaniline alone is obtained, which may also be obtained in one step by using a greater excess of ether: (3) dimethyl-#-naphthylamine is obtained by passing #-naphthylamine with dimethylether over heated thorium oxide; (4) dimethylaniline is obtained by passing aniline and methyl alcohol over heated aluminium oxide, separating the base thus obtained and passing it with dimethylether over the catalyst.
GB1524226A 1926-06-17 1926-06-17 A process for the catalytic methylation of ammonia and organic amines Expired GB275377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1524226A GB275377A (en) 1926-06-17 1926-06-17 A process for the catalytic methylation of ammonia and organic amines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1524226A GB275377A (en) 1926-06-17 1926-06-17 A process for the catalytic methylation of ammonia and organic amines

Publications (1)

Publication Number Publication Date
GB275377A true GB275377A (en) 1927-08-11

Family

ID=10055574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1524226A Expired GB275377A (en) 1926-06-17 1926-06-17 A process for the catalytic methylation of ammonia and organic amines

Country Status (1)

Country Link
GB (1) GB275377A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580284A (en) * 1949-04-11 1951-12-25 Shell Dev Production of secondary aromatic amines
US4605766A (en) * 1983-12-22 1986-08-12 Ethyl Corporation Alkylation process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580284A (en) * 1949-04-11 1951-12-25 Shell Dev Production of secondary aromatic amines
US4605766A (en) * 1983-12-22 1986-08-12 Ethyl Corporation Alkylation process

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