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桂皮酰氯如何制备
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Sample TextSample TextSample Text [search]桂皮酰氯[/search] |
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2楼2008-05-11 17:52:19
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xiaohezi7844(金币+1,VIP+0):谢谢参与，呵呵，欢迎经常来交流及提供更好的信息与资源！！！
xiaohezi7844(金币+1,VIP+0):谢谢参与，呵呵，欢迎经常来交流及提供更好的信息与资源！！！
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Purified thionyl chloride (125 cc.) was added with efficient cooling to 0.2 mole of the cinnamic acid. After the initial reaction had subsided, the mixture was refluxed on the steam-bath for three hours. The excess thionyl chloride was removed under vacuum and the residue distilled under reduced pressure. All of the cinnamoyl chlorides, with the exception of the p-nitro-, the diary and aryl-alicyclic compounds, were distilled prior to use. |
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