Ethyl diazoacetate
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Names | |
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Preferred IUPAC name Ethyl diazoacetate | |
Other names Ethyl 2-diazoacetate 2-Diazoacetic acid ethyl ester | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.009.828 |
EC Number |
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PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C4H6N2O2 | |
Molar mass | 114.10 g/mol |
Appearance | yellow oil |
Density | 1.085 g/cm3 |
Melting point | −22 °C (−8 °F; 251 K) |
Boiling point | 140 to 141 °C (284 to 286 °F; 413 to 414 K) 720 mmHg |
Hazards | |
GHS labelling:[3] | |
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Danger | |
H226, H240, H302, H315, H320, H351 | |
P281, P305+P351+P338, P501 | |
NFPA 704 (fire diamond) | |
Safety data sheet (SDS) | Ethyl diazoacetate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Ethyl diazoacetate (N=N=CHC(O)OC2H5) is a diazo compound and a reagent in organic chemistry. It was discovered by Theodor Curtius in 1883.[4] The compound can be prepared by reaction of the ethyl ester of glycine with sodium nitrite and sodium acetate in water.
As a carbene precursor, it is used in the cyclopropanation of alkenes.
Although the compound is hazardous, it is used in chemical industry as a precursor to trovafloxacin.[5] Procedures for safe industrial handling have been published.[6]
Another location where EDA was used is in the production of BI-4752, a invented 5-HT2C agonist that is even superior to lorcaserin.
References
[edit]- ^ Womack, E. B.; Nelson, A. B. (1944). "Ethyl Diazoacetate". Organic Syntheses. 24: 56; Collected Volumes, vol. 3, p. 392.
- ^ "Ethyl diazoacetate". Sigma-Aldrich.
- ^ "Safety Data Sheet" (PDF). chemblink.com. 11 October 2018.
- ^ Curtius, T. (1883). "Ueber die Einwirkung von salpetriger Säure auf salzsauren Glycocolläther" [On the reaction of nitrous acid with glycine ethyl ester hydrochloride]. Berichte der Deutschen Chemischen Gesellschaft. 16 (2): 2230–2231. doi:10.1002/cber.188301602136.
- ^ Maas, G. (2009). "New Syntheses of Diazo Compounds". Angewandte Chemie International Edition. 48 (44): 8186–8195. doi:10.1002/anie.200902785. PMID 19790217.
- ^ Clark, J. D.; Shah, A. S.; Peterson, J. C. (2002). "Understanding the large-scale chemistry of ethyl diazoacetate via reaction calorimetry". Thermochimica Acta. 392–393: 177–186. doi:10.1016/S0040-6031(02)00100-4.