On the mechanism of carboxylate elimination from carbohydrate monoester-derived radicals
作者:Julia A. Turner、Hendrik Zipse、Mark S. Taylor
DOI:10.1039/d4ob00241e
日期:2024.4.24
computational study of the mechanism of hydrogen atom transfer-induced carboxylate elimination from monoacylated 1,2-diol groups in pyranosides is presented. A comprehensive analysis of the 1,2-migration, elimination and fragmentation pathways reveals that concerted elimination via a 7-membered, hydrogen-bonded transition state is favored. Relative rates of elimination inferred from an intramolecular competition
提出了氢原子转移诱导吡喃糖苷中单酰化 1,2-二醇基团消除羧酸根机理的计算研究。对 1,2-迁移、消除和断裂途径的综合分析表明,通过7 元氢键过渡态的协同消除是有利的。从分子内竞争实验推断出的相对消除率与计算得到的趋势一致。