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第29讲-亚胺和烯胺;氧化还原

Lecture 29 - Imines and Enamines; Oxidation and Reduction
课程网址: http://videolectures.net/yalespan125bs2011_mcbride_lec29/  
主讲教师: J. Michael McBride
开课单位: 耶鲁大学
开课时间: 2014-08-19
课程语种: 英语
中文简介:
亚胺广泛存在于化学和生物学领域,在氨基酸的人工合成、L-谷氨酸脱氢酶和转氨合成中起着关键作用。亚胺还通过烯胺中间体参与Stork的酮α-烷基化和酰化反应。当离子自由基中间体参与格氏试剂的形成或品哪醇的还原时,有机化学中的氧化和还原可能涉及实际的电子转移。但在处理有机化学中的共价分子时,原子氧化态更常被用作人工簿记设备,有助于为不涉及实际电子转移的转换建议试剂选择。通过假设不同原子之间的共价键是纯离子键来分配氧化状态。
课程简介: Imines are pervasive in chemistry and biology, playing key roles both the in artificial Strecker synthesis of amino acids and their biosynthesis by L-glutamate dehydrogenase and by transamination. Imines are also involved in Stork's α-alkylation and acylation of ketones by way of enamine intermediates. Oxidation and reduction in organic chemistry can involve actual electron transfer, when ion-radical intermediates are involved as in the formation of Grignard reagents or in the pinacol reduction. But more often in treating the covalent molecules of organic chemistry atomic oxidation states are used as an artificial bookkeeping device that helps suggest reagent choice for transformations that do not involve literal electron transfer. Oxidation states are assigned by pretending that covalent bonds between different atoms are purely ionic.
关 键 词: 亚胺; 烯胺; 氧化和还原
课程来源: 视频讲座网
数据采集: 2021-11-13:zkj
最后编审: 2021-11-13:zkj
阅读次数: 115