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CAS No. : | 1570-05-4 | MDL No. : | MFCD01861843 |
Formula : | C21H18O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BYOKJLCIKSFPDU-UHFFFAOYSA-N |
M.W : | 334.37 | Pubchem ID : | 10854155 |
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 |
---|---|---|
With thionyl chloride;pyridine; for 4h;Heating / reflux; | 3, [4-DIBENZYLOXYBENZOIC] acid (3.1 g. 9.3 mmol) was combined with pyridine (5 drops, catalytic) and thionyl chloride (15 ml, 205 [MMOL).] The solution was heated at reflux for 4 h, cooled, and excess thionyl chloride removed under reduced pressure. The crude product was dissolved in benzene (50 [ML),] and stripped of solvent under vacuum. The benzoyl chloride (theoretical yield 3.4 g) was then dissolved in dichloromethane and used directly in the next step. | |
With oxalyl dichloride; In dichloromethane; at 20℃; for 2h; | Reference Example 1; General syntheis methods of side chain amines (a)-(n); As illustrated in the synthesis route above, an equivalent mole of oxalyl chloride was added to a methylene chloride (10 V) solution (suspension) of benzoic acid derivative (A), which corresponds to side chains (a)-(n), followed by stirring at room temperature for 2 hours. After concentration in vacuo until reaching about-half volume, the resultant was added to an amine (1.0 equivalent/Et3N (1.2 equivalent)/THF solution), which corresponds to side chains (a)-(n), that had been cooled to - 20°C, subsequently stirring for 30 minutes. Diluting with methylene chloride, washing with water, drying, and then concentrating the filtrate yielded desired amine (C) (side chains (a)-(n)) (90percent or higher yield). Physical constans of side chains (a)-(n) are shown below.Side chain (a) [Show Image] 1H-NMR (CDCl3) delta(delta): 1.72-1.88 (6H, m), 2.50-2.62 (4H, m), 2.68 (2H, t, J = 5.7 Hz), 3.52-3.57 (2H, m), 5.19 (4H, s), 6.90 (1H, d, J =8.7 Hz), 7.21-7.60 (11H, m), 7.56 (1H, d, J = 1.8 Hz), 8.49 (1H, bs). LC/MS (ES +) : 445 (M+H+) |
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