N,O-Dimethylhydroxylamine
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Names | |
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Preferred IUPAC name N-Methoxymethanamine | |
Other names Methoxymethylamine; Methylmethoxyamine; HNMeOMe | |
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ECHA InfoCard | 100.012.960 ![]() |
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InChI
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Properties | |
Chemical formula | C2H7NO |
Molar mass | 61.084 g·mol−1 |
Melting point | −97 °C (−143 °F; 176 K)[2] Hydrochloride salt: 112 to 115 °C (234 to 239 °F; 385 to 388 K) |
Boiling point | 43.2[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ![]() ![]() ![]() Infobox references |
Chemical compound
N,O-Dimethylhydroxylamine is a methylated hydroxylamine used to form so called 'Weinreb amides' for use in the Weinreb ketone synthesis.[2] It is commercially available as its hydrochloride salt.[1]
Synthesis
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.[2]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/N%2CO-Dimethylhydroxylamine_synthesis01.svg/500px-N%2CO-Dimethylhydroxylamine_synthesis01.svg.png)
See also
References
- ^ a b N,O-Dimethylhydroxylamine hydrochloride at Sigma-Aldrich
- ^ a b c d 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.