Formal Aniline Synthesis from Phenols through Deoxygenative N‐Centered Radical Substitution
作者:Samuel W. Lardy、Kristine C. Luong、Valerie A. Schmidt
DOI:10.1002/chem.201904288
日期:2019.12.2
lignin-derived substrates have emerged as desirable biorenewable chemical feedstocks for coupling reactions. A radical-mediated conversion of phenol derivatives to anilines is reported, using unfunctionalized hydroxamic acids as the N-centered radical source. The applicability of this triethylphosphitemediated O-atom transfer approach, which tolerates a range of steric and electronic demands to naturally
Efficient Aryl Migration from an Aryl Ether to a Carboxylic Acid Group To Form an Ester by Visible-Light Photoredox Catalysis
作者:Shao-Feng Wang、Xiao-Ping Cao、Yang Li
DOI:10.1002/anie.201706597
日期:2017.10.23
We have developed a highly efficient aryl migration from an arylether to a carboxylic acid group through retro‐Smiles rearrangement by visible‐light photoredox catalysis at ambient temperature. Transition metals and a stoichiometric oxidant and base are avoided in the transformation. Inspired by the high efficiency of this transformation and the fundamental importance of C−O bond cleavage, we developed
The invention is directed to compounds of Formula (I) useful as delta and mu opioid receptor modulators. Pharmaceutical and veterinary compositions and methods of treating mild to severe pain and various diseases using compounds of the invention are also described.
The invention is directed to compounds of Formula (I) useful as delta and mu opioid receptor modulators. Pharmaceutical and veterinary compositions and methods of treating mild to severe pain and various diseases using compounds of the invention are also described.
Rhodium-Catalyzed Decarbonylative C–H Arylation of 2-Aryloxybenzoic Acids Leading to Dibenzofuran Derivatives
作者:Shinji Maetani、Takahide Fukuyama、Ilhyong Ryu
DOI:10.1021/ol4010905
日期:2013.6.7
Rhodium-catalyzed intramolecular C-H arylation of 2-aryloxybenzoic acids proceeded accompanied by decarbonylation to give dibenzofuran derivatives in high yields. The present reaction is widely applicable to substrates bearing various functionalities.