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[求助]
有机化学机理外文翻译求助
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In contrast we have found that a wide variety of allylic trichloroacetamidates, which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichlorIn contrast we have found that a wide variety of allylic trichloroacetamidates,which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichloroacetonitrile, readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80 In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. 2,8 For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2.acetonitrile,~ readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80 In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. 2,8 For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2. |
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185012831(金币+40, 翻译EPI+1): 翻译的很好，不过有些估计是您没学有机化学的原因，不是很通顺啊。。 2011-12-03 14:48:00
爱与雨下(金币+1): 2011-12-04 09:59:53
sltmac(金币+10): 2011-12-14 12:38:48
185012831(金币+40, 翻译EPI+1): 翻译的很好，不过有些估计是您没学有机化学的原因，不是很通顺啊。。 2011-12-03 14:48:00
爱与雨下(金币+1): 2011-12-04 09:59:53
sltmac(金币+10): 2011-12-14 12:38:48
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楼主也整理下再求助呀 有很多重复内容呀 In contrast we have found that a wide variety of allylic trichloroacetamidates,which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichloroacetonitrile, readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80。In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2.acetonitrile,~ readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80。 对比我们发现的多种烯丙基trichloroacetamidate（三氯乙酰胺），他能从相应的酒精和三氯乙氰中容易制备得到，在回流的间二甲苯中几个小时内容易受到热重组影响，从而使得三氯乙酰胺的产量超过80%。 经过检测三氯乙酰胺的碳骨架无论如何都不会产生重排。这种转变是一种基于其实体和区域特异性的简单的电环化反应，这与已观察到的单键转移现象相似。 例如，1-hepten-3-1的三氯乙酰胺为2-heptenyltrichloroacetamide （庚烯基三氯乙酰胺）提供反顺比至少98:2的乙腈,使其在回流的间二甲苯中几个小时内容易受到热重组影响，从而使得三氯乙酰胺的产量超过80% |
2楼2011-12-03 13:32:44