Ni‐Catalyzed Cyclization of Enynes and Alkynylboronates: Atom‐Economical Synthesis of Boryl‐1,4‐dienes
作者:Natalia Cabrera‐Lobera、M. Teresa Quirós、Elena Buñuel、Diego J. Cárdenas
DOI:10.1002/chem.201903405
日期:2019.11.18
We report a novel atom-economical Ni-catalyzed cyclization reaction of enynes with alkynylboronates. The reaction employs a non-expensive Ni salt, a phosphine-based ligand and easy-handling alkynylboronates as boron-carbon source. The reaction provides complex fused-bicyclic compounds containing borylated 1,4-cyclohexadienes in high yields in short reaction times, involving the formation of two C-C
我们报告了炔烃与炔基硼酸酯的新型原子经济镍催化环化反应。该反应采用廉价的镍盐,膦基配体和易处理的炔基硼酸酯作为硼碳源。该反应在短的反应时间内以高收率提供了包含硼化的1,4-环己二烯的复杂的稠合双环化合物,涉及一步形成两个CC键。根据机理实验结果,提出了合理的反应机理。