Control of Conformer Population and Product Selectivity and Stereoselectivity in Competitive Photocyclization/Rearrangement of Chiral Donor–Acceptor Dyad
作者:Emi Nishiuchi、Tadashi Mori、Yoshihisa Inoue
DOI:10.1021/ja302768w
日期:2012.5.16
the relative excitation efficiency of each conformer, assessed by theoretical and experimental examinations, enabled us to precisely control the chemo- and diastereoselectivities of the competitive photocyclization/rearrangement reaction of a chiral donor-acceptor (D/A) dyad by irradiation wavelength, solvent polarity, and reaction temperature. Manipulating the ground- and excited-state conformer equilibria
通过理论和实验检查评估的构象异构体数量和每个构象异构体的相对激发效率使我们能够精确控制手性供体 - 受体(D/A)二元组通过辐射进行的竞争性光环化/重排反应的化学和非对映选择性波长、溶剂极性和反应温度。操纵基态和激发态构象异构体平衡对于严格控制分子内 D/A 系统至关重要,这与相关分子间系统中涉及的相当不同的激发物种形成鲜明对比。