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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(xué)還原得出不同的還原產(chǎn)物,這是根據(jù)還原劑和基板而定。然而,這一機(jī)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(yīng)在各種取代芳基也很容易整合,'并比較其還原產(chǎn)物。這也是眾所周知,1,2- dihydroquinolines一些異構(gòu)相應(yīng)的1,4-異構(gòu)體。對(duì)N – 烷基吡啶異構(gòu)化研究預(yù)計(jì)放棄這一進(jìn)程的基本因素,有價(jià)值的信息。 |
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至尊木蟲 (職業(yè)作家)
| 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,與此相反的是,根據(jù)還原劑和底物不同,吡啶鹽的化學(xué)還原得出不同的還原產(chǎn)物。然而,這一機(jī)制還沒有得到完全理解。因此,有必要研究N – 烷基吡啶鹽的還原,在這種反應(yīng)中,具有不同電子效應(yīng)的各種取代芳基也很容易進(jìn)行整合,'并對(duì)其還原產(chǎn)物進(jìn)行比較。眾所周知,1,2-二氫喹啉可以異構(gòu)為相應(yīng)的1,4-異構(gòu)體。對(duì)N – 烷基吡啶異構(gòu)化的研究將為揭示這一進(jìn)程潛在的因素提供有價(jià)值的信息。 |
至尊木蟲 (職業(yè)作家)
|
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(xué)還原得到不同的還原產(chǎn)物,這依還原劑和底物而定。然而,這一還原機(jī)理還沒有得到完全了解。因此,研究具有不同電子效應(yīng)的各種取代芳基在N – 烷基吡啶鹽的還原中的協(xié)同效應(yīng)并比較其對(duì)應(yīng)的還原產(chǎn)物,這將是一個(gè)令人感興趣的研究。眾所周知,一些1,2- 二氫奎寧異構(gòu)體可異構(gòu)為相應(yīng)的1,4-異構(gòu)體。對(duì)N – 芳基二氫吡啶異構(gòu)化研究有望獲得影響異構(gòu)化過程的基本因素的有價(jià)值的信息。 |
至尊木蟲 (職業(yè)作家)
| 與生物系統(tǒng)中腺嘌呤二核苷酸(NAD﹢)還原生成1,4一二氫煙酰胺化合物相反,吡啶鹽的化學(xué)還原得到不同的還原產(chǎn)物,這依還原劑和底物而定。然而,這一還原機(jī)理還沒有得到完全了解。因此,研究具有不同電子效應(yīng)的各種取代芳基在N – 烷基吡啶鹽的還原中的協(xié)同效應(yīng)并比較其對(duì)應(yīng)的還原產(chǎn)物,這將是一個(gè)令人感興趣的研究。眾所周知,一些1,2- 二氫奎寧異構(gòu)體可異構(gòu)為相應(yīng)的1,4-異構(gòu)體。對(duì)N – 芳基二氫吡啶異構(gòu)化研究有望獲得影響異構(gòu)化過程的基本因素的有價(jià)值的信息。 |
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