作者:Carolina Méndez-Gálvez、Matthias Böhme、Reko Leino、Risto Savela
DOI:10.1002/ejoc.202000046
日期:2020.3.22
Transition metal‐catalyzed [2+2+2] cyclotrimerization is a powerful method to synthesize substituted benzene derivatives with optimal atom efficiency. However, controlling regio‐ and chemoselectivity is difficult. We present a cobalt catalyzed cycloaddition of alkynes, which provides the cycloaddition products in high yields and excellent regioselectivity in the presence of a pyridine‐2,6‐diimine ligand
过渡金属催化的[2 + 2 + 2]环三聚是一种以最佳原子效率合成取代苯衍生物的有效方法。但是,很难控制区域选择性和化学选择性。我们提出了炔烃的钴催化环加成反应,该反应可在吡啶-2,6-二亚胺配体存在下以高收率和出色的区域选择性提供环加成产物。