Organocatalytic Gram-Scale Synthesis and Alkylation of Heteroaryl and Electron-Rich Aryl α-Substituted γ-Lactones
作者:Maxence Bos、Floris Buttard、Alexis Vallée、Emmanuel Riguet
DOI:10.1055/s-0037-1611820
日期:2019.8
alkylated in mild catalytic conditions to construct α-quaternary stereocenters. Interesting mild oxidation reaction, using molecular oxygen, was also highlighted during this study. The synthesis of γ-lactones α-substituted with heterocycles and electron-rich aromatic rings is described. The method, based on a sequence involving an organocatalytic addition of boronic acid to the 5-hydroxyfuran-2(5H)-one
抽象的 描述了被杂环和富电子芳环α-取代的γ-内酯的合成。该方法基于包括将硼酸有机催化加至5-羟基呋喃-2(5 H)-1 ,然后进行还原和内酯化的顺序,从而获得以克为单位的各种γ-内酯。其中,在温和的催化条件下将带有苯并呋喃,苯并噻吩和吲哚环的γ-内酯烷基化以构建α-季立体中心。在这项研究中,还强调了使用分子氧进行的有趣的轻度氧化反应。 描述了被杂环和富电子芳环α-取代的γ-内酯的合成。该方法基于包括将硼酸有机催化加至5-羟基呋喃-2(5 H)-1 ,然后进行还原和内酯化的顺序,从而获得以克为单位的各种γ-内酯。其中,在温和的催化条件下将带有苯并呋喃,苯并噻吩和吲哚环的γ-内酯烷基化以构建α-季立体中心。在这项研究中,还强调了使用分子氧进行的有趣的轻度氧化反应。