Mild synthesis of <i>N</i>-acylsulfenamides from arylamides and disulfides
作者:Xing-Song Zhang、Xiao-Hong Zhang
DOI:10.1080/10426507.2015.1012670
日期:2016.1.2
synthesize N-acylsulfenamides via NaH-promoted sulfenylation of benzamides with readily available disulfides under mild conditions. A series of N-acylsulfenamides were easily obtained in moderate to high yields. Moreover, the obtained N-acylsulfenamides were used as thiolating reagents in the synthesis of sulfenylpyrroles and 3-sulfenylbenzofurans.
图形摘要 摘要 开发了一种有效的新方法,通过 NaH 促进苯甲酰胺与易于获得的二硫化物在温和条件下进行磺基化反应来合成 N-酰基次磺酰胺。一系列 N-酰基亚磺酰胺很容易以中等至高产率获得。此外,获得的 N-酰基亚磺酰胺可用作硫基吡咯和 3-硫基苯并呋喃合成中的硫醇化试剂。
The synthesis of 3-sulfenylflavones via FeCl3-promoted regioselective cyclization of alkynyl aryl ketones with N-arylthiobenzamides
作者:Lin-Feng Shi、Xing-Guo Zhang、Xiao-Hong Zhang
DOI:10.1016/j.tet.2016.11.034
日期:2016.12
A FeCl3-promoted regioselectivecyclization of alkynyl aryl ketones with N-arylthiobenzamides had been developed for the synthesis of 3-sulfenylflavones derivatives. Various alkynyl aryl ketones and N-arylthiobenzamides with a number of functional groups were compatible in this reaction to afford the corresponding 3-sulfenylflavones in moderate to good yields. The mechanism was described in detail
An ESR Study of<i>N</i>-Benzoyl- and<i>N</i>-Pivaloyl-<i>N</i>-(arylthio)aminyls
作者:Yozo Miura、Yosuke Katsura、Masayoshi Kinoshita
DOI:10.1246/bcsj.51.3004
日期:1978.10
N-Benzoyl-N-(arylthio)aminyls, ArCO\dotNSAr′, and N-pivaloyl-N-(arylthio)aminyls, t-BuCO\dotNSAr, were generated in benzene by hydrogen-abstraction from N-benzoyl- and N-pivaloylbenzenesulfenamides. The hyperfine coupling constants (hfcc) for the radicals are in the range of 6.80–7.57 G for the nitrogen nucleus and 1.68–1.97 G for the S-phenyl ring protons. However, hfcc due to the benzoyl and pivaloyl protons were not detected. The g-values lie in the range of 2.0081–2.0084. On the basis of these ESR parameters, it is suggested that the acylaminyls exist in a π-electronic ground state and that the unpaired electron is located predominantly on the nitrogen atom (2pz orbital) and the phenylthio group. From the decay kinetic study of the radicals, it was found that N-benzoyl-N-(4-cnlorophenylthio)aminyl persisted for more than 3 h in benzene at 24 °C, and N-pivaloyl-N-(4-chlorophenylthio)aminyl decayed only a little, even after 20 h.
Synthesis of Sulfilimines via Selective S–C Bond Formation in Water
作者:Yue Chen、Dong-mei Fang、He-sen Huang、Xiao-kang Nie、Shi-qi Zhang、Xin Cui、Zhuo Tang、Guang-xun Li
DOI:10.1021/acs.orglett.3c00604
日期:2023.3.31
Sulfilimines are valuable compounds both in organic synthesis and in pharmaceuticals. Here we developed a mild and simplified method for preparation of sulfilimines via selective S–Cbond formation rather than traditional S–N bond formation. The method is both attractive and useful for the following reasons: it uses a readily available alkylation reagent such alkyl bromide or alkyl iodide, it uses water