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CAS No. : | 35037-73-1 | MDL No. : | MFCD00035702 |
Formula : | C8H4F3NO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | LGPKFIGMLPDYEA-UHFFFAOYSA-N |
M.W : | 203.12 | Pubchem ID : | 92298 |
Synonyms : |
|
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P210-P261-P264-P270-P271-P280-P301+P310+P330-P302+P352+P332+P313+P362+P364-P304+P340+P311-P305+P351+P338+P337+P313-P403+P233-P405-P501 | UN#: | 2206 |
Hazard Statements: | H227-H301+H331-H315-H319-H335 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | In tetrahydrofuran; at 20℃;Inert atmosphere; | 1.22 g (3.61 mmol) of <strong>[128293-62-9]4-amino-1-methyl-1H-imidazole-2-carboxylic acid ethyl ester</strong> (synthesis analogous to Example 1A, Stage 3, or else according to Tetrahedron Lett. 2003, 44, 1607 and literature cited there) is mixed in 50 ml of THF under argon with 1.46 g (7.21 mmol) of 4-(trifluoromethoxy)phenylisocyanate and stirred overnight at room temperature. The reaction mixture is filtered, the filtrate is concentrated by evaporation in a vacuum, and it is purified chromatographically. [0125] Yield: 860 mg (62% of theory) [0126] LC-MS (Method 4): Rt=2.41 min. [0127] MS (ESI+): m/z=373 [M+H]+ [0128] 1H-NMR (300 MHz, DMSO-d6): delta=8.98 (bs, 2H), 7.55 (m, 2H), 7.36 (s, 1H), 7.29 (m, 2H), 4.28 (q, 2H), 3.91 (s, 3H), 1.30 (t, 3H). |
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