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yhc0316

银虫 (初入文坛)

[求助] 求帮忙翻译,谢谢

Synthesis of 2-(4-bromophenyl)-3,3-diphenylacrylonitrile (TPAN-Br). Into a three-necked
round-bottom flask (500 mL) equipped with a condenser were placed benzophenone (2, 8.1 g
44.5 mmol), NaH (60%, 2.2 g, 55 mmol) and benzene (80 mL) under nitrogen. The mixture
was reflux for 10 min. Then, 4-bromophenylacetonitrile (1, 9.4 g, 48 mmol) in benzene (150
mL) was added dropwise over 1 h under reflux condition. Evolved H2 was observed at the oil
bubbler and the reaction was lasted for another 20 h. Upon cooling to room temperature, 100
mL of water was added to the mixture. The organic layer was collected and washed with brine
three times. The organic phase was then dried over anhydrous Na2SO4 and concentrated under
vacuum. Addition of methanol gave pale yellow crystals in 86% yield.

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LifePursuit

木虫之王 (文学泰斗)

【答案】应助回帖

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RXMCDM: 金币+1, 多谢应助! 2014-11-26 21:52:08
yhc0316: 金币+30, 翻译EPI+1 2014-11-27 10:14:26
合成2-(4-溴苯基)-3,3-二苯基丙烯腈(TPAN-Br)。在氮气保护下,向装备有冷凝器的三口圆底烧瓶(500 mL)中放入二苯甲酮(2, 8.1 g 44.5 mmol)、NaH (60%, 2.2 g, 55 mmol)和苯(80 mL),并将这一混合物回流10分钟。随后,在回流的条件下,逐滴加入4-溴苯乙腈(1, 9.4 g, 48 mmol)的苯溶液(150 mL),滴加时间超过1小时。这一过程中,逸出的氢气可以在油起泡器处观察到,反应再持续20小时。冷却到室温后,立即向混合物加入水(100mL)。收集有机层,并用卤水洗涤3次。其后,有机相用无水硫酸钠干燥,并真空浓缩。加入甲醇得到淡黄色晶体,产率为86%。
2楼2014-11-26 20:48:10
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