Gold-catalyzed Fluorination of Alkynyl Esters and Ketones: Efficient Access to Fluorinated 1,3-Dicarbonyl Compounds
作者:Xiaojun Zeng、Zhichao Lu、Shiwen Liu、Gerald B. Hammond、Bo Xu
DOI:10.1002/adsc.201701179
日期:2017.11.23
We developed an efficient synthesis of 2-fluoro-1,3-dicarbonyl compounds using readily available alkynyl ketones or esters as starting material. The key step is the insertion of hydrogen fluoride (HF) to the gold carbene intermediate generated from cationic gold catalyzed addition of N-oxides to alkynyl ketones or esters. This method gives excellent chemical yields and regioselectivity with good functional
我们开发了一种有效的合成2-氟-1,3-二羰基化合物的方法,该方法使用容易获得的炔基酮或酯作为起始原料。关键步骤是将氟化氢(HF)插入到金卡宾中间体中,该中间体是由阳离子金催化的N-氧化物加成至炔基酮或酯而生成的。该方法具有出色的化学收率和区域选择性,并具有良好的官能团耐受性。