A Bifunctional Photoaminocatalyst for the Alkylation of Aldehydes: Design, Analysis, and Mechanistic Studies
作者:Thomas Rigotti、Antonio Casado-Sánchez、Silvia Cabrera、Raúl Pérez-Ruiz、Marta Liras、Víctor A. de la Peña O’Shea、José Alemán
DOI:10.1021/acscatal.8b01331
日期:2018.7.6
visible light conditions. To corroborate the experimental observations, ground state geometry optimization and energy transition studies of thioxanthone and bifunctional catalyst 4c were optimized by time-dependent density functional theory (TD DFT) calculations. The alkylation of aldehydes with this photoaminocatalyst works with high enantioselectivities and yields due to the stereoelectronic properties
提出了一种基于咪唑烷酮和噻吨酮的双功能光氨基催化剂。这些催化剂的制备过程分两步进行,可轻松调节空间特性。咪唑烷酮光催化剂的光物理和电化学数据已经确定,表明该催化剂可以在可见光条件下工作。为证实噻吨酮和双功能催化剂4c的实验观察,基态几何优化和能量跃迁研究通过基于时间的密度泛函理论(TD DFT)计算进行了优化。由于该催化剂的立体电子性质,用这种光氨基催化剂进行的醛烷基化具有高的对映选择性和收率。提出了基于不同机理实验,TD DFT计算和激光闪光光解的合理机理循环。