N,O-Dimethylhydroxylamine
From Wikipedia, the free encyclopedia
| Names | |
|---|---|
| Preferred IUPAC name
N-Methoxymethanamine | |
| Other names
Methoxymethylamine; Methylmethoxyamine; HNMeOMe | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.012.960 Edit this at Wikidata |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C2H7NO | |
| Molar mass | 61.084g·mol−1 |
| Appearance | Colorless liquid[2] |
| Melting point | −97°C (−143°F; 176K)[3] Hydrochloride salt: 112 to 115 °C (234 to 239 °F; 385 to 388 K) |
| Boiling point | 43.2°C (109.8°F; 316.3K)[3] |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Serious eye irritation |
| GHS labelling: | |
| GHS07: Exclamation mark | |
| Warning | |
| H315, H319, H335 | |
| P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25°C [77°F], 100kPa).
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Chemical compound
N,O-Dimethylhydroxylamine is an organic compound with the chemical formula CH3NHOCH3. Its structure is H3C−NH−O−CH3. It is a colorless liquid. It is a methylated hydroxylamine used to form so called 'Weinreb amides' for use in the Weinreb ketone synthesis.[3] It is commercially available as its hydrochloride salt (methoxy(methyl)ammonium chloride [CH3O(CH3)NH2]+Cl−).[1]
Synthesis
[edit ]It may be prepared by reacting ethyl chloroformate (or similar) with hydroxylamine followed by treatment with a methylating agent such as dimethyl sulfate. The N,O-dimethylhydroxylamine is then liberated by acid hydrolysis followed by neutralization.[3]
See also
[edit ]References
[edit ]- 1 2 N,O-Dimethylhydroxylamine hydrochloride at Sigma-Aldrich
- ↑ cymitquimica.com. "CAS 1117-97-1: N-methoxymethylamine". cymitquimica.com. Retrieved 12 April 2026.
- 1 2 3 4 Weinreb, Steven M.; Folmer, James J.; Ward, Timothy R.; Georg, Gunda I. (2006). "N,O-Dimethylhydroxylamine". E-EROS Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rd341.pub2. ISBN 0471936235.