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CAS No. : | 104146-10-3 | MDL No. : | MFCD00191253 |
Formula : | C24H23ClN2O5S | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | KFCMZNUGNLCSJQ-NFBKMPQASA-N |
M.W : | 486.97 | Pubchem ID : | 10874591 |
Synonyms : |
|
Chemical Name : | (6R,7R)-4-Methoxybenzyl 3-(chloromethyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate |
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P501-P261-P272-P280-P284-P302+P352-P342+P311-P362+P364-P304+P340-P333+P313 | UN#: | 2811 |
Hazard Statements: | H317-H334 | 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 |
---|---|---|
456 g | With pyridine; phosphorus pentachloride In methanol; dichloromethane at -30 - 5℃; for 4 h; | CH2Cl2 (3L), PCl5 (374.4g) were added to 10L of the reaction flask, the temperature was stirred at room temperature down to about 0 ° C, pyridine (200mL) was slowly added dropwise to control the dropping rate,So that the internal temperature should not exceed 5 . The reaction was continued after 1h cooled to -5 , GCLE was added in portions(7Phenylacetamide-3-chloromethyl cephalanacrylate p-methoxybenzyl ester, 584.4g), controlling the internal temperature between -5 to 0 , the reaction was continued for 3h. Rapid cooling to -30 , the beginning slowly dropping methanol (1500mL), continue to -30 for 1h. The temperature was raised to -10 ° C, and 1500 mL of water was added dropwise. The temperature was controlled to -10 to 0 ° C for 1 hour. Finally, 1500mL of water was added once more and the mixture was stirred for 5min. The reaction solution was poured into a beaker with a lower mouth and was allowed to stand for delamination. The organic phase was taken off and a small amount of CH2Cl2 was added to the aqueous phase. The combined organic phases were dried over anhydrous sodium sulfate 1000g) dried,Suction filtration, the filter cake was washed with a small amount of CH2Cl2, the filtrate was added dropwise to isopropyl ether (12L) and stirred overnight. The next day, suction filtration, the filter cake was washed with a small amount of isopropyl ether, pale yellow solid, scraped the material, dried in vacuo overnight to give the product 456g. |
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