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The solution is stirred with activated charcoal,filtered and the filtrate is concentracted to about 50 ml. Upon the addition of diisopropylether, the product is separated as an oil. The latter solidifies while stirring. The solid product is filtered off and dried.
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Thanks!

[ Last edited by bire on 2009-4-22 at 22:35 ]

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bire(½ð±Ò+3,VIP+0): 4-23 22:14
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Originally posted by bire at 2009-4-23 08:27:
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liubencai

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bire(½ð±Ò+2,VIP+0): 4-23 08:29
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2Â¥2009-04-22 22:36:37
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myhaoqq

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bire(½ð±Ò+2,VIP+0): 4-23 08:29
The solution is stirred with activated charcoal,filtered and the filtrate is concentracted to about 50 ml. Upon the addition of diisopropylether, the product is separated as an oil. The latter solidifies while stirring. The solid product is filtered off and dried.
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3Â¥2009-04-22 23:54:30
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iamwolfling

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bire(½ð±Ò+1,VIP+0): 4-23 13:45
the product is separated as an oil.
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4Â¥2009-04-23 06:09:38
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