Conformational Analysis of Acyclic α‐Fluoro Sulfur Motifs
作者:Nathalie Erdeljac、Christian Mück‐Lichtenfeld、Constantin G. Daniliuc、Ryan Gilmour
DOI:10.1002/chem.202003361
日期:2020.10.27
of sulfur, a conformationalanalysis of α‐fluoro sulfides, sulfoxides, and sulfones, would be instructive in order to delineate the non‐covalent interactions that manifest themselves in structure. A combined crystallographic and computational analysis demonstrates the importance of hyperconjugative donor‐acceptor interactions in achieving acyclic conformational control. The conformational disparity in
含有α-氟硫基序[RS(O) n CH 2 F]的生物活性小分子在制药和农化领域的出现频率越来越高。突出的例子包括抗哮喘药物 Flovent ®和苯基吡唑类杀虫剂吡虫啉。鉴于这些结构单元在生物活性小分子设计中的流行,以及硫的不同氧化态,α-氟硫化物、亚砜和砜的构象分析对于描述所表现出的非共价相互作用将具有指导意义。本身在结构上。结合晶体学和计算分析证明了超共轭供体-受体相互作用在实现无环构象控制中的重要性。α-氟亚砜的顺式和反式非对映异构体的构象差异尤其值得注意。
Redox-active alkylsulfones as precursors for alkyl radicals under photoredox catalysis
of 1°, 2°, and 3° alkyl radicals through the single-electron transfer of sulfones under mild reaction conditions. These alkyl radicals generated via the reductive desulfonylation of readily synthesized and stable alkylsulfones were engaged to forge C–C bonds. A detailed study was also carried out to shed light on the mechanism.