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fypiao4989木蟲 (職業(yè)作家)
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6-methoxy-3,4-dihydronaphthalen-1(2H)-one oxime在不同的酸及溶劑條件下進(jìn)行貝克曼反應(yīng)時(shí)，總是得到少量的2,3,4,5-tetrahydro-7-methoxy-1H-2-benzazepin-1-one，而其另一個(gè)同分異構(gòu)體為主產(chǎn)物。最近，我們發(fā)現(xiàn)貝克曼重排產(chǎn)物的組成分布隨著反應(yīng)的溫度和時(shí)間有較大的變化。我們合成并培養(yǎng)了標(biāo)題物質(zhì)以便于研究反應(yīng)條件對(duì)兩種同分異構(gòu)體產(chǎn)物的比例的影響。順反式對(duì)甲苯磺酸酯的比例可以通過核磁共振H譜的積分面積來求得。本文報(bào)導(dǎo)標(biāo)題物質(zhì)的單晶結(jié)構(gòu)。 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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zhangzws
金蟲 (正式寫手)
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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. 這是我校對(duì)的翻譯，論文中英語多用被動(dòng)語態(tài)。另外，樓主這是你的摘要嘛？我覺得需要修改一下，有點(diǎn)亂，僅是建議 |
3樓2010-07-31 10:11:13
| 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樓2010-07-31 09:49:54
fypiao4989
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4樓2010-08-01 12:12:32
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