(CF<sub>3</sub>CO)<sub>2</sub>O/K<sub>2</sub>CO<sub>3</sub>‐Mediated Synthesis of 3‐Sulfonylchromones through Cyclocondensation of β‐Ketosulfones and Carboxylic Acids
作者:Meng‐Yang Chang、Chun‐Yi Lin
DOI:10.1002/adsc.202300207
日期:2023.5.12
high-pressure (using a sealed tube) and dry-nitrogen atmospheric conditions. This study proposed and discussed a plausible mechanism. The paper also described the formation of 3-sulfonylflavones and gram-scale synthesis of 3-sulfonylchromones. Various combinations of anhydrides and bases-promoted reaction conditions were investigated for the (4+2) annulation via one carbon-oxygen (C−O) bond and one carbon-carbon
一锅法 (CF 3 CO) 2 O/K 2 CO 3介导的 β-酮砜与羧酸的串联环缩合通过在高压下回流 MeCN(使用密封管)和干氮大气条件。本研究提出并讨论了一种似是而非的机制。该论文还描述了 3-磺酰黄酮的形成和 3-磺酰色酮的克级合成。通过一个碳-氧 (CO) 键和一个碳-碳 (C=C) 键的形成,研究了酸酐和碱促进反应条件的各种组合以实现 (4+2) 环化。