Aerobic oxidative trifunctionalization of olefins for the synthesis of functionalizedβ-ketothiosulfones has been described. The transformation proceeds through molecular oxygen activation under copper catalysis and forms the two new C–S bonds in a single operation using mild conditions. A novel Cu-catalyzed sulfonyl radical addition/oxidation/funtionalization relay mechanism was proposed for the
Cu-Catalyzed Three-Component Coupling of Aryne, Alkyne, and Benzenesulfonothioate: Modular Synthesis of <i>o</i>-Alkynyl Arylsulfides
作者:Xianglong Peng、Chen Ma、Chen-Ho Tung、Zhenghu Xu
DOI:10.1021/acs.orglett.6b02027
日期:2016.9.2
copper-catalyzed three-component coupling reaction of in situ formed arynes, terminal alkynes, and benzenesulfonothioates is described. This reaction provides an efficient modular synthesis of o-alkynyl arylsulfides from easily available starting materials. This process involves one C–S bond and one C–C bond formation in one pot.
Cu-catalyzed efficient construction of S (Se)-containing functional organosilicon compounds
作者:Fei Wang、Ying Chen、Weidong Rao、Shu-Su Shen、Shun-Yi Wang
DOI:10.1039/d2cc04512e
日期:——
A Cu-catalyzed cascade reaction of four-membered silacyclobutanes (SCBs) and thiosulfonates to construct S (Se)-containing organosiliconcompounds was developed. The protocol shows a wide range of substrate scope, high functional group compatibility and mild reaction conditions. New C–S (Se) and Si–O bonds were constructed in one step.
开发了 Cu 催化的四元硅杂环丁烷 (SCB) 和硫代磺酸盐的级联反应以构建含 S (Se) 的有机硅化合物。该协议显示了广泛的底物范围、高官能团相容性和温和的反应条件。一步构建了新的 C-S (Se) 和 Si-O 键。
Chiral Brønsted acid catalyzed asymmetric oxidation of N‐acyl sulfenamide by H
<sub>2</sub>
O
<sub>2</sub>
: An efficient approach to obtaining chiral N‐acyl sulfinamide
作者:Longjun Ma、Lizhe Bai、Zixuan Yu、Qinxu Shen
DOI:10.1002/chir.23478
日期:2022.9
long been recognized, methods for their synthesis are still auxiliary-based approaches which possess the disadvantages of poor atomeconomy and limited substrate universality. Due to the weak nucleophilicity of amides, it is more difficult to prepare chiral N-acylsulfinamides by traditional methods. Herein, we describe an example of catalyticasymmetricsynthesis of N-acyl sulfinamides. In this work,
尽管手性亚磺酰胺试剂在合成化学中的作用早已得到认可,但其合成方法仍以辅助方法为主,存在原子经济性差、底物通用性有限等缺点。由于酰胺的亲核性较弱,传统方法制备手性N-酰基亚磺酰胺的难度较大。在此,我们描述了一个催化不对称合成 N-酰基亚磺酰胺的例子。在这项工作中,N-酰基次磺酰胺作为有用的底物,因为不可或缺的 N-H 键可以与手性磷酸形成有效的氢键。H 2 O 2(35%) 被用作末端氧化剂,以高收率和对映选择性制备亚磺酰胺,它可以很容易地衍生为亚砜而不损失对映选择性。
1,1-Difunctionalization of α‑Carbonyl Sulfur Ylides with Thiosulfonates: Synthesis of β-Keto Thiosulfones
conditions is disclosed. In this protocol, two new C–S bonds are constructed in a one-step reaction. A series of aliphatic and aromatic β-keto thiosulfones were obtained in moderate to good yields. This reaction probably proceeds through sulfur ylide-involved nucleophilicsubstitution of an ion pair within a solventcage.