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CAS No. : | 46006-36-4 | MDL No. : | MFCD11656261 |
Formula : | C8H6N2O2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | VVQNAFBGAWCMLU-UHFFFAOYSA-N |
M.W : | 162.15 | Pubchem ID : | 2771758 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P305+P351+P338 | UN#: | |
Hazard Statements: | H319 | Packing Group: | |
GHS Pictogram: |
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* 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 |
---|---|---|
61% | Step 1: ethyl 1H-benzimidazole-4-carboxylate 2.50 g (15.4 mmol) 1H-benzimidazole-4-carboxylic acid in 100 mL ethanol are combined with 50 mL saturated ethanolic hydrochloric acid solution and refluxed for 15 hours. The reaction mixture is poured into saturated, aqueous potassium carbonate solution and extracted with ethyl acetate. The combined organic phases are dried on sodium sulphate and evaporated down to 50 mL using the rotary evaporator and filtered. 1.80 g (9.46 mmol, 61%) ethyl 1H-benzimidazole-4-carboxylate are obtained as a colourless solid. Rf=0.92 [silica gel, dichloromethane/methanol (80/20)] MS [ESI (M+H)+]]=191 |
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