作者:Dian-Feng Chen、Cameron H. Chrisman、Garret M. Miyake
DOI:10.1021/acscatal.0c00281
日期:2020.2.21
user-friendly bromine radical catalysis system that enables efficient [3 + 2] cycloaddition of diversely substituted vinyl- and ethynylcyclopropanes with a broad range of alkenes, including drug-like molecules and pharmaceuticals. Key to the success is the use of photosensitizing triplet-state β-fragmentation of a judiciously selected precatalyst, cinnamyl bromide, to generate bromine radicals in a
我们在这里报告了一种温和,安全和用户友好的溴自由基催化系统,该系统能够使[3 + 2]取代的乙烯基和乙炔基环丙烷与各种烯烃(包括类药物分子和药物)进行有效的环加成。成功的关键是使用明智选择的预催化剂肉桂酰溴的光敏三重态β片段化,以百万分之几的光催化剂(即4CzIPN)加载量,以受控方式生成溴自由基。