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In organic chemistry carboxamides (or amino carbonyls) are functional groups with the general structure R-CO-NR'R′′ with R, R', and R′′ as organic substituents, or hydrogen. Two amino acids, asparagine and glutamine, have a carboxamide group in them. The properties and reactivity of the carboxamide group arise from the hydrogen bonding capabilities of the -NH2 group as well as the carbonyl oxygen. Furthermore, the carbon atom in a carboxamide has a low-lying LUMO that is capable of accepting electron density from the nonbonding lone pair on the nitrogen, weakening the carbon-oxygen bond. Examples of simple carboxamides include: * Acetamide * Benzamide ==See also== For more information, see the article on Amides. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「carboxamide」の詳細全文を読む スポンサード リンク
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