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stu_ma

金虫 (正式写手)

小龙

[求助] 溴代烷的季铵化

Condensed trimethylamine (∼ 2 mL) was
added dropwise to a solution of compound 7 (120 mg) in THF (5 mL) at
–78 °C. The mixture was allowed to warm up to room temperature. The
precipitate was re-dissolved by the addition of water (10 mL). After the
mixture was cooled down to –78 °C, extra trimethylamine (∼ 2 mL) was
added and the mixture was stirred for 24 h at room temperature.
最近做了一个实验,步骤如上所述,就是用三甲胺将溴代烷季铵化,请问Condensed trimethylamine是什么意思,是浓三甲胺还是液体三甲胺,在网上买的药品都是三甲胺的水溶液,能直接用嘛?望有经验的大牛不吝赐教,小弟谢过!

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lilost

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stu_ma(金币+2, 博学EPI+1): 您的意思就是把气体通入,那为什么还说滴加 2011-10-09 14:39:36
Condensed trimethylamine是压缩的三甲胺,要把三甲胺从三甲胺水溶液中赶出来。
历尽天华成此景,人间万事出艰辛!
2楼2011-10-09 11:46:15
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