Iron/copper co-catalyzed highly selective arylation of sulfinamides with aryl iodides
作者:Shuanglin Qin、Yunhao Luo、Yue Sun、Le Tian、Shende Jiang、Jun yan、Guang Yang
DOI:10.1016/j.tetlet.2019.151167
日期:2019.10
efficient Iron(III) and Copper(II) co-catalyst without ligands catalyzed arylation of sulfinamides with aryl iodide was primarily reported. In brief, in the presence of Fe(NO3)3·9H2O, CuO and K3PO4, the highly selective C–N cross coupling of several sulfinamides and aryl iodides was achieved in high chemical yield, while the aryl chlorides and bromides could not yield coupling products. It is noteworthy
在本研究中,主要报道了廉价但有效的铁(III)和铜(II)助催化剂,没有配体催化亚磺酰胺与碘化芳基的芳基化反应。简而言之,在Fe(NO 3)3 ·9H 2 O,CuO和K 3 PO 4的存在下,以高化学收率实现了几种亚磺酰胺和碘代芳烃的高选择性C–N交叉偶联,而芳基氯化物溴化物不能产生偶联产物。值得注意的是,通过手性芳基化叔-butanesulfinamide与芳基碘化物,Ñ -芳基叔-丁亚磺酰胺即使在克级的情况下也不会外消旋地提供。可能的机理是,活性Fe(III)物种可能会大大促进铜催化剂和芳基碘化物之间的这种氧化加成过程。此外,使用这种合成方法,为N-苯基亚磺酰胺的衍生物开发了一种简便而有效的途径,这可能有助于开发新的药物分子和原料化学物质。
Chiral N-aryl tert-butanesulfinamide-olefin ligands for rhodium-catalyzed asymmetric 1,4-addition of aryl boronic acids to cyclic enones
作者:Shuai Yuan、Qingle Zeng、Jiajun Wang、Lihong Zhou
DOI:10.24820/ark.5550190.p009.977
日期:——
Chiral N-aryl sulfinamide-olefins which are readily synthesized via C-N coupling and nucleophilic substitution have been used as chiralligands, which demonstrate moderate to excellent asymmetric catalytic performance in the rhodium-catalyzedasymmetric1,4-addition of arylboronicacids to cyclic enones. The chiralligands are readily synthesized via C-N coupling reaction and nucleophilic substitution
Sulfonimidates: Useful Synthetic Intermediates for Sulfoximine Synthesis via C–S Bond Formation
作者:Priscilla Mendonça Matos、William Lewis、Jonathan C. Moore、Robert A. Stockman
DOI:10.1021/acs.orglett.8b01473
日期:2018.6.15
Medicinally relevant sulfoximines are accessed from C–S coupling of sulfonimidates and commercially available organomagnesiumreagents. Sulfonimidates are conveniently synthesized by oxidative alkoxylation of readily available sulfinamides. This constitutes a general C–S coupling approach for the synthesis of sulfoximines.
Catalytic Asymmetric Oxidation of <i>tert</i>-Butyl Disulfide. Synthesis of <i>tert</i>-Butanesulfinamides, <i>tert</i>-Butyl Sulfoxides, and <i>tert</i>-Butanesulfinimines
作者:Derek A. Cogan、Guangcheng Liu、Kyungjin Kim、Bradley J. Backes、Jonathan A. Ellman
DOI:10.1021/ja9809206
日期:1998.8.1
of tert-butyl thiolate. Addition of LiNH2 in liquid ammonia and THF provides tert-butanesulfinamide (3; 91% yield). A single recrystallization provides enantiomerically pure 3 in 71−75% overall yield from disulfide 1. Enantiomerically pure thiosulfinate ester 2 also reacts readily and stereospecifically with Grignard reagents, organolithiums, lithium amides, and lithium imine salts to provide enantiomerically
The palladium-catalyzed C–N cross coupling of sulfinamides and arylhalides is reported. In the presence of Pd2(dba)3, tBuXPhos, NaOH, and a small amount of water, the C–N cross coupling of chiral tert-butanesulfinamide and arylhalides was accomplished to give N-aryl tert-butanesulfinamide without racemization, and the coupling of racemic p-toluenesulfinamide smoothly afforded N-aryl p-toluenesulfinamides