Eco-friendly synthesis of pyridines via rhodium-catalyzed cyclization of diynes with oximes
作者:Fen Xu、Chunxiang Wang、Haolong Wang、Xincheng Li、Boshun Wan
DOI:10.1039/c4gc01756k
日期:——
We describe a new route for the synthesis of pyridines via [2 + 2 + 2] cycloaddition of diynes and oximes catalyzed by Rh(NBD)2BF4/MeO-Biphep using ethanol as an alternative green reaction medium, affording the desired pyridine derivatives in yields of up to 93%. This environmentally friendly method meets the requirement for green chemistry by minimizing pollution from solvents and is tolerant of a