Ionic Liquids-Promoted Addition of Arylsulfinic Acids to <i>p</i>-Quinones: A Green Synthesis of Diaryl Sulfones
作者:J. Yadav、B. Reddy、T. Swamy、N. Ramireddy
DOI:10.1055/s-2004-829145
日期:——
Arylsulfinic acids undergo smooth conjugate addition to p-quinones in air- and moisture-stable second generation room temperature ionic liquid [bmim]BF 4 under mild conditions to produce the corresponding arylsulfonylhydroquinones in excellent yields with high selectivity. In this reaction, ionic liquid plays the dual role as the solvent and the catalyst. The quinones show enhanced reactivity in ionic
Ammonium iodide-promoted unprecedented arylsulfonylation of quinone with sodium arylsulfinates
作者:Jin-Wei Yuan、Shuai-Nan Liu、Ling-Bo Qu
DOI:10.1016/j.tet.2017.10.022
日期:2017.11
A novel ammonium iodide-promoted arylsulfonylation of quinones with sodium arylsulfinates has been explored. This reaction proceeded smoothly through unique nucleophilic addition reaction and produced the arylsulfonylation products in moderate to good yields. The reactions proceeded efficiently over a broad range of substrates with good regioselectivity and functional group tolerance. (C) 2017 Elsevier Ltd. All rights reserved.
Steric effects of vicinal substituents on redox equilibriums in quinoid compounds
作者:Eric R. Brown、K. Thomas Finley、Richard L. Reeves