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
Regiospecificity in the Synthesis of Diaryl Sulfones
作者:Daniel E. Allgeier、Sue Ann Herbert、Rory Nee、Kenneth D. Schlecht、K. Thomas Finley
DOI:10.1021/jo026640x
日期:2003.6.1
The addition of arylsulfinic acids to 2-methyl-1,4-benzoquinone provides high yields of sulfones in a wide variety of solvents. The distribution of isomeric products obtained is strongly influenced by either (1) the acidity of aqueous solvents or (2) the water content of alcohol solvents. The distribution of isomeric products does not change in the various anhydrous, aproticsolvents examined.
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.