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nirenjie0627

金虫 (小有名气)

[交流] 请虫友们帮忙翻译一段话,谢谢啦!

称取一缩二乙二醇63.6g置于四口烧瓶中,量取PBr348ml于恒压滴液漏斗中,装上冷凝管、尾气吸收以及搅拌装置,开启加热电源,将PBr3缓慢滴加至四口烧瓶中,2h滴完,控制反应温度为90℃,继续回流反应6h。反应产物用10%
NaHCO3溶液、蒸馏水各洗3次,在分出的有机相中加入1.5g无水硫酸镁,搅拌2min,静置30min,过滤得到1-溴-2-(2-溴乙氧基)乙烷中间体125.8g,收率为90.4%(以一缩二乙二醇量计),保存备用。
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seaharrier

铁杆木虫 (知名作家)

帝国空军中将

引用回帖:
Originally posted by nirenjie0627 at 2010-10-17 10:06:54:
称取一缩二乙二醇63.6g置于四口烧瓶中,量取PBr348ml于恒压滴液漏斗中,装上冷凝管、尾气吸收以及搅拌装置,开启加热电源,将PBr3缓慢滴加至四口烧瓶中,2h滴完,控制反应温度为90℃,继续回流反应6h。反应产物用1 ...

为何金币发放不过半呐?

俺是来挣金币的哦!
Patienceisbitter,butitsfruitissweet.
3楼2010-10-18 00:51:38
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seaharrier

铁杆木虫 (知名作家)

帝国空军中将

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
nirenjie0627(金币+30, 翻译EPI+1):谢谢啦! 2010-10-17 20:09:51
ringzhu(金币+30): 2010-11-20 11:27:43
ringzhu(金币+10):完全发放悬赏金币 偶给你讨回来的 哈哈 记得谢偶哦~~~ 2010-11-20 11:28:12
Weigh 63.6g of diethylene glycol and put it in four flasks. Take 348ml of PBr into the constant pressure dropping funnel, turn on the heating power after installing condenser, off-gas absorption and mixing device, and then drop slowly PBr3 into the four flasks with 2 hours controlling the reaction temperature at 90℃ during this process, continuing reflux reaction within 6 hours. Reaction products are washed with 10% solution of NaHCO3 and distilled water each for 3 times. Add 1.5g of anhydrous magnesium sulfate into the separation of the organic phase, after 2 minutes of stirring and putting aside for 30 minutes, and get 125.8g of 1-bromo-2-(2-bromo ethoxy yl) ethane intermediate by filtering, and the coefficient of yield is 90.4% (by the amount of adiethylene glycol). And preserve and backup the products.
Patienceisbitter,butitsfruitissweet.
2楼2010-10-17 13:57:49
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hawkchai

木虫 (正式写手)

引用回帖:
Originally posted by seaharrier at 2010-10-17 13:57:49:
Weigh 63.6g of diethylene glycol and put it in four flasks. Take 348ml of PBr into the constant pressure dropping funnel, turn on the heating power after installing condenser, off-gas absorption an ...

//典型的中国式英语
4楼2010-10-19 23:52:23
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