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fypiao4989木虫 (职业作家)
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6-methoxy-3,4-dihydronaphthalen-1(2H)-one oxime在不同的酸及溶剂条件下进行贝克曼反应时，总是得到少量的2,3,4,5-tetrahydro-7-methoxy-1H-2-benzazepin-1-one，而其另一个同分异构体为主产物。最近，我们发现贝克曼重排产物的组成分布随着反应的温度和时间有较大的变化。我们合成并培养了标题物质以便于研究反应条件对两种同分异构体产物的比例的影响。顺反式对甲苯磺酸酯的比例可以通过核磁共振H谱的积分面积来求得。本文报导标题物质的单晶结构。 2,3,4,5-tetrahydro-7-methoxy-1H-2-benzazepin-1-one was always minor product while its another major isomer was 1,3,4,5-tetrahydro-7-methoxy-2H-1-benzazepin-2-one when 6-methoxy-3,4-dihydronaphthalen-1(2H)-one oxime carried out the Beckmann reaction with different acid ang solvent. Recently, we have found the product distribution of the Beckmann rearrangement greatly varied with reaction time and temperature. We synthesized and trained the title compound in order to study the effect of the reaction conditions on the ratio of the two isomers of product. The trans/cis ratio of tosylates was calculated on the basis of NMR integration. In this paper, we report the crystal structure of the title compound. |
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fypiao4989
木虫 (职业作家)
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4楼2010-08-01 12:12:32
| 2,3,4,5-tetrahydro-7-methoxy-1H-2-benzazepin-1-one was always minor product while its isomer 1,3,4,5-tetrahydro-7-methoxy-2H-1-benzazepin-2-one the major product when 6-methoxy-3,4-dihydronaphthalen-1(2H)-one oxime carried out the Beckmann reaction with various kinds of acid and solvent. However, we have found the product distribution of the Beckmann rearrangement greatly varied with reaction time and temperature recently. We synthesized and trained the title compound in order to study the effect of the reaction conditions on the ratio of the two isomers of product. The trans/cis ratio of tosylates was calculated on the basis of NMR integration. In this paper, we report the crystal structure of the title compound. |
2楼2010-07-31 09:49:54
zhangzws
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The Beckmann reaction of 6-methoxy-3,4-dihydronaphthalen-1(2H)-one oxime was carried out under different pH values and solvents. The results shown that little product 2,3,4,5-tetrahydro-7-methoxy-1H-2-benzazepin-1-one was gained and the main product was its another isomer. Recently, it was found from our researcher that the rearrangement product distribution of the Beckmann reaction greatly varied with reaction time and temperature. While, the title compound was synthesized and cultured in order to study the effect on the ratio of the two isomers of the reaction conditions. The trans/cis ratio of tosylates was calculated on the basis of NMR integration. In addition, the crystal structure of the title compound was reported in this paper. 这是我校对的翻译，论文中英语多用被动语态。另外，楼主这是你的摘要嘛？我觉得需要修改一下，有点乱，仅是建议 |
3楼2010-07-31 10:11:13