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CAS No. : | 27328-68-3 | MDL No. : | MFCD09835467 |
Formula : | C9H7ClN2O2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | OIQMRQZOCUNAIN-UHFFFAOYSA-N |
M.W : | 210.62 | Pubchem ID : | 12470261 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
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 |
---|---|---|
Stage 2 (5-Chloro-1H-indazol-3-yl)acetic acid The amino acid obtained in Stage 1 is dissolved with 3 equivalents of sodium hydroxide pellets in 600 ml of water in a three-necked flask equipped with a thermometer, a mechanical stirrer, a dropping funnel and a reflux condenser surmounted by a bubbler. The mixture is brought to 30-40 C. and 5.7 g of active charcoal are added. Hydrazine monohydrate is slowly added (2.1 eq, i.e. 22.7 g). The mixture is stirred for 15 minutes at 30-40 C. and then for 3 hours at 80-85 C. The reaction mixture is cooled. After filtration, the reaction mixture is acidified with 75 ml of 36% hydrochloric acid. The precipitate formed is filtered off on sintered glass and then dried in a desiccator. Melting point: 193 C. |
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