Isolable Anionic, Neutral and Cationic Radicals from Reactions of N,N′-Dimesityldiamidocarbene and Lewis Acids
Isolable Anionic, Neutral and Cationic Radicals from Reactions of N,N′-Dimesityldiamidocarbene and Lewis Acids
复制标题
DOI：
10.1002/chem.202001191
复制
发表时间：
2020-05-26
影响因子：
4.3
通讯作者：
Stephan, Douglas W.
中科院分区：
文献类型：
--
作者：
Andrews, Ryan J.;Stephan, Douglas W.
B（C_6F_5）（3）在N，N '-二均三甲苯二酰胺卡宾（DAC）的亲核进攻下，氟原子转移到硼中心，生成新的两性配体（1）.这种B-F氟化物可以被取代或提取，得到相应的氢化物（2）或三氟甲磺酸盐（3）衍生物或相应的阳离子（4）。这些物质用KC 8或Cp 2Co还原，得到可分离的阴离子和中性自由基（5-8）。类似地，[Ph 3C]阳离子经历DAC的亲核攻击，导致自由基阳离子（9）的自发形成。
B(C6F5)(3) undergoes nucleophilic attack by N,N '-dimesityldiamidocarbene (DAC) with fluoride transfer to the boron center, resulting in a new zwitterion (1). This B-F fluoride can be replaced or abstracted to give the corresponding hydride (2) or triflate (3) derivatives or the corresponding cation (4). These species are reduced with KC8 or Cp2Co to give isolable anionic and neutral radicals (5-8). Similarly, the [Ph3C] cation undergoes nucleophilic attack by DAC resulting in the spontaneous formation of the radical cation (9).