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CAS No. : | 5565-72-0 | MDL No. : | MFCD00085145 |
Formula : | C8H5N3O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 191.14 | Pubchem ID : | - |
Synonyms : |
|
TPSA :Topological Polar Surface Area | - | H-Bond Acceptor Count : | - |
XLogP3 : | - | H-Bond Donor Count : | - |
SP3 : | - | Rotatable Bond Count : | - |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313-P362 | UN#: | |
Hazard Statements: | H315-H319 | Packing Group: | |
GHS Pictogram: |
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Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With Al3+-K10 montmorillonite clay; In neat (no solvent); at 55℃; for 0.25h;Microwave irradiation; | General procedure: A 5 mL microwave vial was charged with acidhydrazide (100 mg, 1 eq), trimethyl orthoester (2 eq) and Al3+-K10 clay (75 mg). The resulting mixture was kept under microwave irradiation maintaining the temperature at 55 C for 15 min (Microwave irradiations were performed on CEM-discover model No. 908010). The reaction was monitored by TLC. After completion of the reaction, reaction mixture was diluted with ethyl acetate stirred well, filtered, washed well with ethyl acetate. Filtrate was evaporated under reduced pressure to obtain highly pure product. In some cases, products were purified by column chromatography using 60-120 mesh silica with 20-100 % ethyl acetate in pet ether as eluting solvents. The catalyst recovered by filtration was reused for another 5 more times. |
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