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in contrast to the formation of 1,4- dihydro compounds from reduction of nicotinamide adenine dinucleotide(NAD﹢) in biological systems, chemical reduction of pyridinium salts gives different reduction products depending on the reducing agents and substrates.However, the mechanism of the reductions has not been fully understood. Therefore, it would be of interest to study the reduction of N-arylpyridinium salts,in which aryl groups with various substituents differing in electronic effect can be easily incorporated,and to compare their reduction products. It is also known that some of 1,2-dihydroquinolines isomerize to the corresponding 1,4-isomers. The study on the isomerization of N-aryldihydropyridines is expected to give valuable informations on the factors underlying the process. 與此相反的是在生物系統(tǒng)中1,4一二氫煙酰胺化合物來自腺嘌呤二核苷酸(NAD﹢)的還原,吡啶鹽的化學還原得出不同的還原產物,這是根據還原劑和基板而定。然而,這一機制還沒有得到完全理解。因此,這將有興趣研究N – 烷基吡啶鹽的還原,這與不同的電子效應在各種取代芳基也很容易整合,'并比較其還原產物。這也是眾所周知,1,2- dihydroquinolines一些異構相應的1,4-異構體。對N – 烷基吡啶異構化研究預計放棄這一進程的基本因素,有價值的信息。 |
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至尊木蟲 (職業(yè)作家)
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in contrast to the formation of 1,4- dihydro compounds from reduction of nicotinamide adenine dinucleotide(NAD﹢) in biological systems, chemical reduction of pyridinium salts gives different reduction products depending on the reducing agents and substrates.However, the mechanism of the reductions has not been fully understood. Therefore, it would be of interest to study the reduction of N-arylpyridinium salts,in which aryl groups with various substituents differing in electronic effect can be easily incorporated,and to compare their reduction products. It is also known that some of 1,2-dihydroquinolines isomerize to the corresponding 1,4-isomers. The study on the isomerization of N-aryldihydropyridines is expected to give valuable informations on the factors underlying the process. 與生物系統(tǒng)中腺嘌呤二核苷酸(NAD﹢)的還原生成1,4一二氫煙酰胺化合物相反,吡啶鹽的化學還原得到不同的還原產物,這依還原劑和底物而定。然而,這一還原機理還沒有得到完全了解。因此,研究具有不同電子效應的各種取代芳基在N – 烷基吡啶鹽的還原中的協(xié)同效應并比較其對應的還原產物,這將是一個令人感興趣的研究。眾所周知,一些1,2- 二氫奎寧異構體可異構為相應的1,4-異構體。對N – 芳基二氫吡啶異構化研究有望獲得影響異構化過程的基本因素的有價值的信息。 |
至尊木蟲 (職業(yè)作家)
至尊木蟲 (職業(yè)作家)
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