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| CAS号 : | 274-09-9 |
精确质量 : | 122.03700 |
| 分子式 : | C7H6O2 |
logP : | 1.41530 |
| 分子量 : | 122.12100 |
PSA : | 18.46000 |
1,3-苯并间二氧杂环戊烯 | |
1,3-Benzodioxole | |
274-09-9 | |
C7H6O2 | |
122.12100 | |
18.46000 | |
1.41530 | |
122.03700 |
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n20/D 1.539(lit.)
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透明无色至淡黄色液体
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131 °F
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172-173 °C(lit.)
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-18 °C
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1.064 g/mL at 25 °C(lit.)
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0.2 g/100 mL (25 ºC)
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5.374mmHg at 25°C
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Stable under normal temperatures and pressures.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
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DA5600000
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3
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29329970
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3
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S23-S24/25-S36/37/39-S26-S16
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III
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UN 1993 3/PG 3
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Xn
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R10; R22
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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>由儿茶酚经环合而得。先将儿茶酚溶于二甲基亚砜（DMSO）中，再将氢氧化钠溶于剩余的二甲基亚砜中，并加入二氯甲烷，搅拌、加热回流，待温度升至95℃时，滴加儿茶酚二甲基亚砜溶液，保持回流温度在95-110℃。滴加完毕，在110-115℃保温搅拌1h。然后于130℃进行水蒸气蒸馏，98℃以下的低沸点馏分供下批套用，收集98-110℃正馏分，静置后分出油层，即得胡椒环，收率85%</p> | |
<p>有机合成中间体。用于合成黄连素。 用作重要的香料、医药及农药中间体</p> |
