Fe(III)/l-Valine-Catalyzed One-Pot Synthesis of N-Sulfinyl- and N-Sulfonylimines via Oxidative Cascade Reaction of Alcohols with Sulfinamides or Sulfonamides
An efficient Fe(III), l -valine, and 4-OH-TEMPO catalytic system was found for the oxidation of alcohols followed by condensation with sulfinamide or sulfonamide in one pot for the synthesis of N-sulfinyl- and N-sulfonylimines compounds under mild conditions. This transformation accommodates a variety of substrates, shows high functional-group tolerance, and affords the corresponding products in good
Various arenesulfinamides were synthesized in good yields by one-pot reactions of 4-nitrophenyl substituted phenyl sulfoxides with elemental sulfur in liquid ammonia. The arenesulfinamides were further reduced with elemental sulfur in liquid ammonia to give corresponding disulfides.
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。
Rare-Earth-Catalyzed Transsulfinamidation of Sulfinamides with Amines
作者:Daheng Wen、Qingshu Zheng、Chaoyu Wang、Tao Tu
DOI:10.1021/acs.orglett.1c01106
日期:2021.5.7
transsulfinamidation of primary sulfinamides with alkyl, aryl, and heterocyclicamines for the synthesis of diverse secondary and tertiary sulfinamides has been realized. Unlike transition metal-catalyzed cross-coupling approaches restricted to non-commercially available disubstituted O-benzoyl hydroxylamines, this newly developed protocol is suitable for diverse readily available primary and secondary amines without
Direct synthesis of N-sulfinyl- and N-sulfonylimines via copper/<scp>l</scp>-proline-catalyzed aerobic oxidative cascade reaction of alcohols with sulfinamides or sulfonamides
An efficient one-pot synthetic method of N-sulfinyl- and N-sulfonylimines by the condensation of alcohols with sulfinamides or sulfonamides under mild and green conditions has been developed using a combination of CuI, L-proline and TEMPO. This system shows excellent functional group compatibility for a wide range of substrates and affords the corresponding products in good to excellent yields.