Palladium-catalyzed direct α-arylation of methyl sulfones with aryl bromides
A direct and efficient approach for palladium-catalyzed arylation of aryl and alkyl methyl sulfones with aryl bromides has been developed. The catalytic system affords arylated sulfones in good to excellent yields (73-90%).
Zheng, Bing,Jia, Tiezheng,Walsh, Patrick J.
supporting information
p. 1690 - 1693
(2013/06/26)
Polyvinylpolypyrrolidone-supported boron trifluoride (PVPP-BF3): Highly efficient catalyst for chemoselective oxygenation of sulfides to sulfones by H2O2
A highly efficient method for the oxidation of sulfides to sulfones using polyvinylpolypyrrolidone-supported boron trifluoride (PVPP-BF3) in the presence of (35%) hydrogen peroxide has been developed. This procedure cleanly oxidizes dialkyl and alkyl aryl sulfides to the corresponding sulfones in excellent yields at room temperature.
Cyanuric chloride promoted oxidation of sulfides to sulfoxides or sulfones in the presence of hydrogen peroxide
Aromatic and aliphatic sulfides are readily oxidized to sulfoxides or sulfones in high yield with 35% hydrogen peroxide in the presence of cyanuric chloride (CC) as an efficient activator. The oxidation of sulfides proceeds at room temperature and the corresponding sulfoxides or sulfones was selectively obtained by controlling the amounts of H2O2 and CC. Various sulfides possessing functional groups such as hydroxyl, methoxy, nitrile, aldehyde and olefinic double bond were successfully and selectively oxidized without affecting sensitive functionalities. [image omitted].
Lakouraj, Moslem Mansour,Abdi, Hamid,Hasantabar, Vahid
experimental part
p. 435 - 441
(2012/06/16)
A CONVENIENT AND GENERAL SYNTHESIS OF ALKANE SULFINIC ACIDS
2-(Alkylsulfonyl)benzothiazoles are reduced with sodium tetrahydroborate to give alkane sulfinic acids in good yield.
Ueno, Yoshio,Kojima, Akihiko,Okawara, Makoto
p. 2125 - 2128
(2007/10/02)
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