Synthesis of 2-Pyrazolines with a CF<sub>3</sub>- and Alkyne-Substituted Quaternary Carbon Center via [3 + 2] Cycloaddition of β-CF<sub>3</sub>-1,3-enynes and Diazoacetates
作者:Wei Li、Hengyuan Li、Jie Qiu、Zhenhui Wang、Xiaofeng Li、Ying-Ming Pan、Cheng Hou、Huaifeng Li
DOI:10.1021/acs.joc.2c01428
日期:2022.9.16
Given the importance of both the CF3 group and the alkyne moiety in synthetic/medicinal chemistry, we report here the first example of efficient synthesis of 2-pyrazolines with a CF3- and alkyne-substituted quaternary carbon center. This methodology has the advantages of high functional group compatibility, the avoidance of base and open-flask conditions, easily available and easy to handle reagent
鉴于 CF 3基团和炔烃部分在合成/药物化学中的重要性,我们在此报告了有效合成具有 CF 3和炔烃取代的季碳中心的 2-吡唑啉的第一个例子。该方法具有官能团相容性高、避免碱基和开瓶条件、试剂易得易操作、底物范围广等优点。值得注意的是,该协议允许生物活性分子的后期功能化和克级合成。