A new method for the preparation of alkyl aryl sulfides through direct oxidative thiolation of alkanes or ethers with arylsulfonylhydrazides using di-tert-butyl peroxide (DTBP) as an oxidant catalyzed by Pd(OAc)2 has been reported. The C-H bonds in various alkanes or ethers were successfully converted into C-S bonds to yield the corresponding sulfides in moderate to good yields.
Iron-Catalyzed C(Sp<sup>3</sup>)–H Borylation, Thiolation, and Sulfinylation Enabled by Photoinduced Ligand-to-Metal Charge Transfer
作者:Jia-Lin Tu、Ao-Men Hu、Lin Guo、Wujiong Xia
DOI:10.1021/jacs.3c01082
日期:——
(LMCT) process. These reactions exhibit remarkably broad substrate scope (>150 examples in total), and most importantly, all of these three reactions show unconventional regioselectivity, with the occurrence of C(sp3)–H borylation, thiolation, and sulfinylation preferentially at the distal methyl position. The procedures are operationally simple and readily scalable and provide access to high-value products
Alkylboronic acids as alkylating agents: photoredox-catalyzed alkylation reactions assisted by K<sub>3</sub>PO<sub>4</sub>
作者:Fuyang Yue、Henan Ma、Hongjian Song、Yuxiu Liu、Jianyang Dong、Qingmin Wang
DOI:10.1039/d2sc05521j
日期:——
alkylboronic acids in organic synthesis, their utility as alkyl radical precursors in visible-light-induced photocatalytic reactions is limited by their high oxidation potentials. In this study, we demonstrated that an inorganophosphorus compound can modulate the oxidation potentials of alkylboronic acids so that they can act as alkyl radical precursors. We propose a mechanism based on the results of fluorescence
尽管烷基硼酸在有机合成中无处不在,但它们在可见光诱导的光催化反应中作为烷基自由基前体的用途受到其高氧化电位的限制。在这项研究中,我们证明了一种无机磷化合物可以调节烷基硼酸的氧化电位,使其可以作为烷基自由基前体。我们根据荧光猝灭实验、电化学实验、 11 B 和31的结果提出了一种机制P NMR 光谱和其他技术。此外,我们描述了一种简单可靠的烷基化方法,该方法具有良好的官能团耐受性,可用于直接 C-B 氯化、氰化、乙烯基化、炔基化和烯丙基化,以及衍生药物分子的后期功能化。值得注意的是,烷基硼酸可以在硼频哪醇酯的存在下被选择性地激活。
US4339611A
申请人:——
公开号:US4339611A
公开(公告)日:1982-07-13
Photoinduced decatungstate-catalyzed C(sp<sup>3</sup>)–H thioetherification by sulfinate salts