Directed Hydroxylation of sp<sup>2</sup> and sp<sup>3</sup> C–H Bonds Using Stoichiometric Amounts of Cu and H<sub>2</sub>O<sub>2</sub>
作者:Rachel Trammell、Lorenzo D’Amore、Alexandra Cordova、Pavel Polunin、Nan Xie、Maxime A. Siegler、Paola Belanzoni、Marcel Swart、Isaac Garcia-Bosch
DOI:10.1021/acs.inorgchem.9b00901
日期:2019.6.3
protocol for the regioselective hydroxylation of sp2 and sp3 C–H bonds using a directing group, stoichiometric amounts of Cu and H2O2. A wide array of aromatic ketones and aldehydes are oxidized in the carbonyl γ-position with remarkable yields. We also expanded this methodology to hydroxylate the β-position of alkylic ketones. Spectroscopic characterization, kinetics, and density functional theory calculations
与其他金属相比,将铜用于C–H键功能化的研究相对较少。在本文中,我们报告了使用导向基团,化学计量的Cu和H 2 O 2对sp 2和sp 3 C–H键的区域选择性羟基化的合成方案。各种各样的芳族酮和醛在羰基γ位被氧化,收率很高。我们还扩展了该方法以羟基化烷基酮的β-位。光谱表征,动力学和密度泛函理论计算都指向单核LCu II(OOH)物种的参与,该物种会氧化芳香族sp 2 通过协调的杂合O-O键裂解C-H键,并伴随对芳烃系统的亲电子攻击。