Sulfonyl Fluoride Synthesis through Electrochemical Oxidative Coupling of Thiols and Potassium Fluoride
作者:Gabriele Laudadio、Aloisio de A. Bartolomeu、Lucas M. H. M. Verwijlen、Yiran Cao、Kleber T. de Oliveira、Timothy Noël
DOI:10.1021/jacs.9b06126
日期:2019.7.31
Sulfonylfluorides are valuable synthetic motifs for a variety of applications, among which sulfur(VI) fluoride exchange-based “click chemistry” is currently the most prominent. Consequently, the development of novel and efficient synthetic methods to access these functional groups is of great interest. Herein, we report a mild and environmentally benign electrochemical approach to prepare sulfonyl
One-pot palladium-catalyzed synthesis of sulfonyl fluorides from aryl bromides
作者:Alyn T. Davies、John M. Curto、Scott W. Bagley、Michael C. Willis
DOI:10.1039/c6sc03924c
日期:——
A mild, efficientsynthesis of sulfonyl fluorides fromaryl and heteroaryl bromides utilizing palladium catalysis is described. The process involves the initial palladium-catalyzed sulfonylation of arylbromides using DABSO as an SO2 source, followed by in situ treatment of the resultant sulfinate with the electrophilic fluorine source NFSI. This sequence represents the first general method for the
a transition metal, is described using a novel partner in the Suzuki–Miyaura couplingreaction catalyzed by Pd(OAc)2 and Ruphos as ligands. The products showed good to outstanding yields and broad functional group compatibility under optimal conditions. The sequentialsynthesis of non-symmetric terphenyls and the gram grade process highlight the approach's synthetic utility. DFT calculations have shown
Redox-Neutral Organometallic Elementary Steps at Bismuth: Catalytic Synthesis of Aryl Sulfonyl Fluorides
作者:Marc Magre、Josep Cornella
DOI:10.1021/jacs.1c11463
日期:2021.12.29
A Bi-catalyzed synthesis of sulfonyl fluorides from the corresponding (hetero)aryl boronicacids is presented. We demonstrate that the organobismuth(III) catalysts bearing a bis-aryl sulfone ligand backbone revolve through different canonical organometallic steps within the catalytic cycle without modifying the oxidation state. All steps have been validated, including the catalytic insertion of SO2
介绍了由相应的(杂)芳基硼酸双催化合成磺酰氟。我们证明了带有双芳基砜配体骨架的有机铋(III)催化剂在催化循环中通过不同的规范有机金属步骤旋转,而不会改变氧化态。所有步骤都已经过验证,包括将 SO 2催化插入Bi-C 键,从而形成结构独特的 O 键亚磺酸铋复合物。该催化方案为各种芳基和杂芳基硼酸提供了出色的收率,显示出广泛的官能团耐受性。
Orthoamide, LXIV [1]. Aromatenformylierungen mit Tris(dichlormethyl)amin und Oligoformylamin-Derivaten in Gegenwart von Supersäuren / Orthoamides, LXIV [1]. Formylation of Aromatic Compounds by Tris(dichloromethyl)amine and Oligoformylamine Derivatives in the Presence of Superacids
作者:Willi Kantlehner、Sylvia Leonhardt、Georg Ziegler、Oliver Scherr、Ralf Kreß、Alain Goeppert、Jean Sommer
DOI:10.1515/znb-2007-0803
日期:2007.8.1
activated by addition of trifluoromethanesulfonicacid. The formylating systems thus formed transform activated aromatic compounds, such as toluene, anisole or 2,4- dimethoxybenzene to the corresponding aldehydes. The formylating ability of systems from 4 and superacids, such as FSO3H, FSO3H/SbF5, C4F9SO3H, and mixtures of aluminum chloride with C4F9SO3H and chlorosulfonic acid, respectively, is compared