Ultrasound-Accelerated Synthesis of Asymmetrical Thiosulfonate <i>S</i>-Esters by Base-Promoted Reaction of Sulfonyl Chlorides with Thiols
作者:Hien Thi Pham、Ngoc-Lan Thi Nguyen、Fritz Duus、Thi Xuan Thi Luu
DOI:10.1080/10426507.2015.1034313
日期:2015.11.2
GRAPHICAL ABSTRACT Abstract Amberlyst A-26, Mg-Al hydrotalcite, potassium fluoride absorbed on alumina, triethylamine and pyridine have been tested as base catalysts and reagents for the reaction of sulfonyl chlorides with thiols to prepare thiosulfonate S-esters. The reactions were performed undersolvent-freeconditions or with a minimum amount of solvent assisted by magnetic stirring, ultrasound
Palladium-catalysed hydrosulfination: synthesis of sulfonic acids and S-alkyl alkanethiosulfonates from alkenes, sulfur dioxide and hydrogen
作者:Wilhelm Keim、J�rgen Herwig
DOI:10.1039/c39930001592
日期:——
S-Alkylalkanethiosulfonates and sulfonicacids can easily be synthesized from sulfur dioxide, alkenes, hydrogen and a cationic palladium(II)-diphosphine complex like [Pd(dppp)(MeCN)2][X]21[X = non or weakly coordinating anion; dppp = 1,3-bis(diphenylphosphino)propane], at temperatures above the ceiling temperature of the SO2–alkene copolymer.