Radical Addition of SF<sub>5</sub>Cl to Cyclopropenes: Synthesis of (Pentafluorosulfanyl)cyclopropanes
作者:Gauthier Lefebvre、Olivier Charron、Janine Cossy、Christophe Meyer
DOI:10.1021/acs.orglett.1c01840
日期:2021.7.16
With the goal of accessing yet unknown SF5-cyclopropyl building blocks, the radical addition of SF5Cl to cyclopropenes was investigated. Addition of the SF5 radical occurs regioselectively at the less substituted carbon of cyclopropenes and trans to the most hindered substituent at C3, while chlorine atom transfer proceeds with moderate to high levels of diastereocontrol. The carbon–chlorine bond in
为了获得未知的SF 5 -环丙基结构单元,研究了SF 5 Cl与环丙烯的自由基加成。SF 5自由基的加成在环丙烯的较少取代的碳上发生区域选择性,并与C3 上受阻最大的取代基发生反式,而氯原子转移以中等至高水平的非对映控制进行。所得加合物中的碳-氯键可以进行随后的自由基还原或参与自由基环化。