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重金求化学合成翻译，高手进来指导指导
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To a flame-dried Schlenk test tube with a magnetic stirring bar was charged CuI (38.2 mg, 0.2 mmol), Cs 2 CO 3 (0.65 g, 2.0 mmol), nitrogen- containing heterocycle (1.4 mmol), aryl or heteroaryl halide (1.0 mmol), and DMF (2 mL) under N 2 . A rubber septum was replaced with a glass stopper, and the system was then evacuated twice and back filled with N 2 . The reaction mixture was stirred for 30 min at room temperature, and then heated at 120 °C for 40 h. The reaction mixture was then cooled to ambient temperature, diluted with 2-3 mL of ethyl acetate, filtered through a plug of silica gel, and washed with 10-20 mL of ethyl acetate. The combined organic extracts were concentrated, and the resulting residue was purified by column chromatography on silica gel to provide the desired product. 以上是一段合成的步骤，filtered through a plug of silica gel, and washed with 10-20 mL of ethyl acetate. The combined organic extracts were concentrated,这一段非常的难懂啊，高手们进来看看，指导指导啊 |
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至尊木虫 (著名写手)
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2楼2010-09-20 16:16:33
slowstar
木虫 (职业作家)
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★ ★ ★ ★ ★ ★ ★ ★
发芽土豆(金币+2):谢谢参与 2010-09-23 09:46:24
baishitou3(金币+5): 2010-09-27 08:40:33
baishitou3(金币+2): 2010-10-04 22:06:17
ringzhu(金币+6): 2010-11-22 12:32:07
发芽土豆(金币+2):谢谢参与 2010-09-23 09:46:24
baishitou3(金币+5): 2010-09-27 08:40:33
baishitou3(金币+2): 2010-10-04 22:06:17
ringzhu(金币+6): 2010-11-22 12:32:07
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filtered through a plug of silica gel, and washed with 10-20 mL of ethyl acetate. The combined organic extracts were concentrated, and the resulting residue was purified by column chromatography on silica gel to provide the desired product. （在砂心漏斗或布氏漏斗里）先填上些硅胶，然后抽滤，再用10-20 mL乙酸乙酯淋洗。合并所得滤液（即抽滤和乙酸乙酯淋洗所得的滤液），将滤液浓缩（用旋转蒸发仪最方便了）后所得的剩余物过硅胶柱（即有机合成上俗称的过柱子），即可得到所需产物。 |
3楼2010-09-20 22:21:45
slowstar
木虫 (职业作家)
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4楼2010-09-20 22:23:19
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