Palladium-Catalyzed Intramolecular Hydroarylation of 2-Bromobenzyl Propargyl Ethers: A New Access to Exocyclic Isochromans
作者:Paramasivan Perumal、Avanashiappan Nandakumar、Krishnamoorthy Balakrishnan
DOI:10.1055/s-0031-1289545
日期:2011.11
An efficient, stereo- and regioselective palladium-catalyzed 6-exo-dig intramolecular hydroarylation of propargyl ethers which provides a concise access to functionalized isochromans in high yields has been developed. A wide range of substrates possessing aromatic, aliphatic and heteroaromatic alkynes can be efficiently transformed into the targeted isochromans. Irrespective of the nature of the substrates
已经开发了有效的,立体的和区域选择性的钯催化的炔丙基醚的6- exo - dig分子内氢芳基化,其提供了高产率地获得官能化的异氰酸酯的简明途径。具有芳族,脂族和杂芳族炔烃的多种底物可以有效地转化为目标异色团。不管底物的性质如何,环化都遵循高度选择性的立体化学和区域化学。 钯-异色- carbocyclization - 6 -外-Dig区域选择性-乙炔