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| CAS号 : | 607-81-8 |
精确质量 : | 250.12100 |
| 分子式 : | C14H18O4 |
logP : | 1.97150 |
| 分子量 : | 250.29000 |
PSA : | 52.60000 |
苄基丙二酸二乙酯 | |
Diethyl benzylmalonate | |
607-81-8 | |
C14H18O4 | |
250.29000 | |
52.60000 | |
1.97150 | |
250.12100 |
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n20/D 1.486(lit.)
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透明至淡黄色液体
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>230 °F
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162-163 °C10 mm Hg(lit.)
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164 - 166ºC
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1.064 g/mL at 25 °C(lit.)
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immiscible
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Stable under normal temperatures and pressures.
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Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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3
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29173980
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S24/25
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Xi
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R36/37/38
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
<p>二、制备方法:将氯苄、丙二酸二乙互、K3PO4·7H2O、三丁基苄基溴化铵按配料比投入反应器,于65℃搅拌反应5h。冷却,加入蒸馏水溶解无机盐,分出有机相,以无水碳酸钾干燥。减压蒸馏,收集142-145℃(1.2kPa)馏分,得苄基丙二酸二乙酯。收率82%。</p> | |
<p>三、用途:局部麻醉药普罗帕酮(Propafenone)的中间体。</p> |
