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baobaodog

铜虫 (小有名气)

[交流] 【求助】求助环糊精与TsCl生成Ts-O-CD的反应

以前基本没做过有机合成,遇到的问题很多,请问环糊精+TsCl变成Ts-O-CD的反应,用水和THF做溶剂,效果好不好?具体操作过程有哪些细节需要注意的呢?希望有经验的能帮下忙?如果可以的话,能留下QQ更好,万分感谢,急需!!!

我的QQ:123035264

[ Last edited by guoj5292 on 2009-7-26 at 08:16 ]
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海若qi

铁杆木虫 (著名写手)

才给0.5个金币啊
8-Cyclodextrin
(60.0 g, 52.9 mmol) was suspended in 500 mL of water, and NaOH (6.57
g,. 164.0 mmol) in 20 mL of water was added dropwise over 6 min. The
suspension became homogeneous and slightly yellow before the addition
was complete. p-Toluenesulfonyl chloride (10.08 g, 52.9 mmol) in 30 mL
of acetonitrile was added dropwise over 8 min, causing immediate formation
of a white precipitate. After 2 h of stirring at 23 OC the precipitate
was removed by suction filtration and the filtrate refrigerated
overnight at 4 “C. The resulting white precipitate was recovered by
suction filtration and after drying for 12 h (0.005 mmHg) afforded 7.18
g of a pure white solid. A second crop gave 0.207 g which was indistinguishable
from the first in all respects.
安心做人,认真做事!
12楼2010-01-12 16:56:11
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xujinsheng

金虫 (正式写手)


baobaodog(金币+1):谢谢参与
没查到!不好意思
2楼2009-07-18 10:52:34
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tommyliu

金虫 (正式写手)


baobaodog(金币+1):谢谢参与
帮顶!!!!!!!!!
3楼2009-07-20 16:17:29
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wudalixing

至尊木虫 (著名写手)


baobaodog(金币+1):谢谢参与
我也不好意思,只能帮顶顶吧!
4楼2009-07-21 19:45:58
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