nickel-catalyzed oxidative dehydrogenative coupling reaction of alkane with thiol for the construction of C(sp3)-S bond has been established, affording more than 50 alkyl thioethers. Notably, pharmaceutical and agrochemicals, such as Provigil, Chlorbenside and Pyridaben, were readily synthesized by this approach. The sterically hindered ligand BC and disulfide which was formed in situ oxidation of thiol, efficiently
作者:Chen Li、Xian Chen、Rui-Peng Bao、Dong-Li Li、Kun Zhang、Dong-Hui Wang
DOI:10.1039/c9ra06811b
日期:——
In this study, we demonstrate an Ir(III)-catalyzed thioether directedalkenylation of arene C–H bonds under mild reaction conditions. The selectivity for mono- or di-alkenylation is controlled by the concentration of alkene and oxidant loading. Various functional groups are tolerated, and moderate to good yields of alkenylated products are achieved.
在这项研究中,我们展示了在温和反应条件下Ir( III ) 催化的硫醚定向烯基化芳烃 C-H 键。单或二烯基化的选择性由烯烃浓度和氧化剂负载量控制。可耐受各种官能团,并获得中等至良好的烯基化产物产率。
Unusual Application for Phosphonium Salts and Phosphoranes: Synthesis of Chalcogenides
作者:Igor M. R. Moura、Arisson Tranquilino、Barbara G. Sátiro、Ricardo O. Silva、Diogo de Oliveira-Silva、Roberta A. Oliveira、Paulo H. Menezes
DOI:10.1021/acs.joc.1c00114
日期:2021.4.16
A novel strategy for the synthesis of sulfides and selenides from phosphonium salts and thio- or selenesulfonates, commercially available compounds, is described. When phosphoranes were used in the reaction, different products were obtained. The methodology does not require the use of metals, reactive species, or anhydrous conditions to be performed.