Palladium-Catalyzed Benzylic Arylation of Pyridylmethyl Silyl Ethers: One-Pot Synthesis of Aryl(pyridyl)methanols
作者:Alexandra R. Rivero、Byeong-Seon Kim、Patrick J. Walsh
DOI:10.1021/acs.orglett.6b00450
日期:2016.4.1
An efficient palladium-catalyzeddirectarylation of pyridylmethyl silyl ethers with arylbromides is described. A Pd(OAc)2/NIXANTPHOS-based catalyst provides aryl(pyridyl)methyl alcohol derivatives in good to excellent yields (33 examples, 57–100% yield). This protocol is compatible with different silyl ether protecting groups, affording either the protected or the free alcohols in an effective one-pot
A General Strategy for Organocatalytic Activation of C–H Bonds via Photoredox Catalysis: Direct Arylation of Benzylic Ethers
作者:Katrine Qvortrup、Danica A. Rankic、David W. C. MacMillan
DOI:10.1021/ja411596q
日期:2014.1.15
Direct C-H functionalization and arylation of benzyl ethers has been accomplished via photoredox organocatalysis. The productive merger of a thiol catalyst and a commercially available iridium photoredox catalyst in the presence of household light directly affords benzylic arylation products in good to excellent yield. The utility of this methodology is further demonstrated in direct arylation of 2,5-dihydrofuran to form a single regioisomer.