Citation:
Arash Ghorbani-Choghamarani, Mohsen Nikoorazm, Gouhar Azadi. One-pot and novel route for the synthesis of 4-substituted-1,2,4-triazolidine-3,5-diones[J]. Chinese Chemical Letters,
;2014, 25(3): 451-454.
doi:
10.1016/j.cclet.2013.11.020
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The efficient and one-pot synthesis of 4-substituted-1,2,4-triazolidin-3,5-dione derivatives (4-substituted urazoles) via combination of triphosgene, substituted anilines, and ethyl carbazate in the presence of cesium carbonate is presented.
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Keywords:
- Urazole,
- Triphosgene,
- Aniline,
- Ethyl carbazate,
- Cesium carbonate
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[1]
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[13] A. Ghorbani-Choghamarani, Z. Chenani, S. Mallakpour, Supported nitric acid on silica gel and polyvinyl pyrrolidone (PVP) as an efficient oxidizing agent for the oxidation of urazoles and bis-urazoles, Synth. Commun. 39 (2009) 4264-4270.
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