GB922859A - Production of carbamic esters - Google Patents
Production of carbamic estersInfo
- 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
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.
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) |
-
0
- NL NL247552D patent/NL247552A/xx unknown
- LU LU38109D patent/LU38109A1/xx unknown
-
1959
- 1959-02-06 FR FR786019A patent/FR1235953A/en not_active Expired
-
1960
- 1960-01-22 GB GB247460A patent/GB922859A/en not_active Expired
- 1960-02-01 CH CH106660A patent/CH382724A/en unknown
- 1960-02-03 DE DEO7223A patent/DE1266752B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1266752B (en) | 1968-04-25 |
NL247552A (en) | |
FR1235953A (en) | 1960-07-15 |
LU38109A1 (en) | |
CH382724A (en) | 1964-10-15 |
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