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CAS No. : | 39562-22-6 | MDL No. : | MFCD00521048 |
Formula : | C14H15NO6 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | UVZJPCAZMGLNTB-UKTHLTGXSA-N |
M.W : | 293.27 | Pubchem ID : | 2063485 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
91.5% | Stage #1: for 1 h; Reflux Stage #2: With hydrogenchloride In ethanol; water for 1 h; Reflux |
1. In a 250 ml bottle, added material a: 2-(3-nitrophenylmethylene)acetoacetic acid methyl ester (54g, 0.184mol) and material b:3-amino-2-butenoic acid cinnamyl ester (40g, 0.184mol) and anhydrous ethanol (80g), heating reflux 1 hour; 2. To step 1 added concentrated hydrochloric acid to the reaction system (> 35percent) 3.31 ml, continue to reflux for 1 hour, the rear cooling crystallization, filtering to obtain cilnidipine crude; thick quantity : 80.7g; yield 88.98percent ; M.P.: 106.1-106.7 °C; maximum shan Za : 0.2percent, a total of 10 small impurity peak, content: 99.25percent.Receiving product: 80.77gYield 89.07percent,M.P.: 106.0-106.8 °CThe maximum shan Za : 0.29percentA total of 9 small impurity peakContent: 99.18percent 3. In accordance with the weight ratio of ethanol: crude = 3:1 use anhydrous ethanol is added in the amount in step 2 the horizontal thick Sydney obtained in recrystallization, to get finished product Cini the horizontal.Yield 91.5percent,M.P.: 107.4-108.2 °CThe maximum shan Za : 0.1460percentThe minimum shan Za : 0.0502percentA total of 2 a small impurity peakContent: 99.8percent |
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