Aerobic oxysulfonylation of alkenes using thiophenols: an efficient one-pot route to β-ketosulfones
作者:Atul K. Singh、Ruchi Chawla、Twinkle Keshari、Vinod K. Yadav、Lal Dhar S. Yadav
DOI:10.1039/c4ob00776j
日期:——
We have developed a highly efficient synthetic route to β-ketosulfones via AgNO3 catalyzed oxysulfonylation of alkenes using thiophenols in the presence of air (O2) and K2S2O8 as eco-friendly oxidants. Thiophenols have been used as sulfonylation precursors for the first time in a dioxygen activation based radical process. Moreover, the protocol also offers a new and convenient method for the synthesis
我们已经开发出了一种高效的合成路线,该路线是在空气(O 2)和K 2 S 2 O 8作为生态友好型氧化剂的情况下,通过使用苯硫酚通过AgNO 3催化的烯烃的氧磺酰化反应。硫酚在基于双氧活化的自由基工艺中首次被用作磺酰化前体。此外,该方案还提供了一种在不使用任何引发剂的情况下,在室温下合成β-羟基硫化物的新型便捷方法。
Iodine-catalysed regioselective synthesis of β -hydroxysulfides
A metal-free, and environment benign iodine-catalysed protocol has been developed for the regioselectivesynthesis of β-hydroxysulfides in good to excellent yields from easily accessible styrenes and thiophenols. The reaction involves single step CS and CO bonds construction.
One-pot auto-oxidation mediated hydroxysulfenylation of electron-deficient and electron-rich olefins with phenthiols was explored.
一锅法介导的电子不足和电子富集烯烃与苯硫醇的羟基硫醚化反应被探索。
Aerobic Copper(II)-catalyzed synthesis of β-hydroxysulfides and selenides from alkenes with disulfides and diselenides
作者:Nobukazu Taniguchi
DOI:10.1016/j.tet.2022.132689
日期:2022.3
A copper-catalyzed hydroxysulfenylation of alkenes was achieved using disulfides in the presence of n-Bu4NI and H2O. The procedure smoothly proceeded under air atmosphere, and the corresponding β-hydroxysulfides were obtained with regio- and anti-selectivity in good yields. Furthermore, a reaction using diselenides effectively produced the expected β-hydroxyselenides. These reactions could use both
在 n-Bu 4 NI 和 H 2 O存在下,铜催化烯烃的羟基亚磺酰化反应,在n- Bu 4 NI 和 H 2 O 存在下,反应过程顺利进行,得到了区域选择性和抗选择性良好的β-羟基硫化物。产量。此外,使用二硒化物的反应有效地产生了预期的β-羟基硒化物。这些反应可以使用二硫属化物上的两个硫属化物基团。此外,该程序还适用于使用硫醇进行的氢化亚磺酰化。
A visible-light-induced and efficient one-pot synthesis of β-hydroxysulfides from olefins, thiosulfonates and HCOOCs using an EDA complex strategy under air atmosphere at room temperature has been disclosed. A plausible radical involved mechanism is proposed. During the reaction process, formates play a crucial role: first, as donors in the EDA complex; second, as providers of the hydrogen source;