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lxsmsj

金虫 (小有名气)

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In the present study, this is confirmed by the presence of
bands for protons of CHOH groups (4.4 ppm) and protons of
–CH2OH groups (3.8 ppm). The other side reactions like alcohol
etherification with the epoxide groups or esterification with
the acid groups are less likely to occur as indicated by a proportional
loss of epoxide groups compared to the number of
acid groups determined in similar syntheses

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pharmjackie

木虫 (正式写手)

lxsmsj(金币+4):谢谢 2010-03-28 18:56
In the present study, this is confirmed by the presence of bands for protons of CHOH groups (4.4 ppm) and protons of –CH2OH groups (3.8 ppm). The other side reactions like alcohol etherification with the epoxide groups or esterification with the acid groups are less likely to occur as indicated by a proportional loss of epoxide groups compared to the number of acid groups determined in similar syntheses
本研究中,4.4ppm处的CHOH基团质子峰及3.8ppm处的CH2OH基团的质子峰证实(该结果)。在类似的合成中检测到烷氧基与羧酸基团呈比例的消失证明其它副反应如醇与环氧的醚化、与酸的酯化发生的可能性极小。
2楼2010-03-28 08:26:05
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维江

金虫 (初入文坛)


sirljz(金币+1):来晚了,谢谢交流。欢迎新虫 2010-03-28 20:12
在本研究中,这是证实了对仲醇组(4.4百万)和质子- CH2OH组(3.8 PPM)的质子带的存在。像酒精与环氧团体或团体与酸醚对方酯化反应不太可能发生的由环氧群体比例的损失表示相比,类似合成酸组数确定。
3楼2010-03-28 13:32:40
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