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噁唑硼烷催化前手性酮肟醚不对称还原反应的密度泛函研究 被引量:1

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摘要 对唑硼烷催化前手性酮肟醚不对称还原反应进行了密度泛函理论(DFT)研究.在B3LYP/6-31G(d)水平下对反应主要中间体和过渡态结构进行了完全优化,并通过振动分析确认了过渡态.结果表明,该不对称还原反应的手性控制步骤是氢从BH3向酮肟醚羰基碳和肟基碳的转移,还原产物的手性由这两步反应所决定.在所有的反应途径中,第一个氢的转移都是通过一个六元环的过渡态完成,而第二个氢的转移则是通过一个五元环或四元环的过渡态完成.
出处 《中国科学(B辑)》 CAS CSCD 北大核心 2006年第2期119-129,共11页 Science in China(Series B)
基金 教育部科学技术重点项目资助(批准号:104263)
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