GB922859A - Production of carbamic esters - Google Patents

Production of carbamic esters

Info

Publication number
GB922859A
GB922859A GB247460A GB247460A GB922859A GB 922859 A GB922859 A GB 922859A GB 247460 A GB247460 A GB 247460A GB 247460 A GB247460 A GB 247460A GB 922859 A GB922859 A GB 922859A
Authority
GB
United Kingdom
Prior art keywords
carbamic esters
production
solvent
alcohol
nitrate
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
GB247460A
Inventor
Jean Louis Emile Pomot
Emmanuel Jean Franco Luzarreta
Gilbert Guy Justin Cousserans
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.)
CFFICE NAT IND de l AZOTE
Original Assignee
CFFICE NAT IND de l AZOTE
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 CFFICE NAT IND de l AZOTE filed Critical CFFICE NAT IND de l AZOTE
Publication of GB922859A publication Critical patent/GB922859A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06—Esters of carbamic acids

Landscapes

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

Abstract

Carbamic esters are prepared by reacting urea nitrate, which may be formed in situ, with an excess of a monohydric aliphatic; cycloaliphatic or araliphatic alcohol in the presence of zinc oxide. The preferred reaction temperature is 130-150 DEG C. After the reaction a non-polar solvent such as dichloroethane, toluene or chloroform may be added to induce crystallisation of ammonium nitrate which is then separated. The process may be carried out continuously, with recycling of recovered alcohol and solvent. Examples prepare methyl, ethyl and isopropyl carbamate; many suitable alcohols are listed.
GB247460A 1959-02-06 1960-01-22 Production of carbamic esters Expired GB922859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR786019A FR1235953A (en) 1959-02-06 1959-02-06 Process for preparing carbamic esters

Publications (1)

Publication Number Publication Date
GB922859A true GB922859A (en) 1963-04-03

Family

ID=8710949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB247460A Expired GB922859A (en) 1959-02-06 1960-01-22 Production of carbamic esters

Country Status (6)

Country Link
CH (1) CH382724A (en)
DE (1) DE1266752B (en)
FR (1) FR1235953A (en)
GB (1) GB922859A (en)
LU (1) LU38109A1 (en)
NL (1) NL247552A (en)

Also Published As

Publication number Publication date
NL247552A (en)
CH382724A (en) 1964-10-15
FR1235953A (en) 1960-07-15
LU38109A1 (en)
DE1266752B (en) 1968-04-25

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