An efficient metal-free synthesis of organic disulfides from thiocyanates using poly-ionic resin hydroxide in aqueous medium
摘要:
An efficient and metal-free method is described for the preparation of organic disulfides from alkyl and acyl methyl thiocyanates in the presence of poly-ionic resin hydroxide in aqueous medium. Further extension of this protocol has been tested using two different organyl thiocyanates to prepare unsymmetrical disulfides. (C) 2013 Elsevier Ltd. All rights reserved.
The rapid and efficient synthesis of disulfides from alkyl and acyl halides
作者:Mahmood Tajbakhsh、Moslem M. Lakouraj、Majid S. Mahalli
DOI:10.1007/s00706-008-0950-0
日期:2008.12
are prepared easily in high yields from the corresponding alkyl and acyl halides under mild and nonaqueous conditions using N , N ′-dibutyl- N , N , N ′, N ′-tetramethyl-ethylenediammonium tetrahydroborate ( BTMETB ) or N , N ′-dibenzyl- N , N , N ′, N ′-tetramethylethylenediammonium tetrahydroborate ( BZTMETB ) and elemental sulfur. The quaternary diammonium borohydrides were easily prepared by treatment
使用 N , N'-二 丁基 -N , N , N ', N' - N'- 四甲基-乙二胺四氢硼酸酯( BTMETB )或 轻度和非水条件, 可以轻松地从相应的烷基卤化物和酰基卤化物以高收率制备各种对称的二烷基二酰基和二酰基二硫化物。 N , N'- 二苄基 -N , N , N ', N'- 四甲基 硼酸四氢硼酸铵( BZTMETB )和元素硫。通过在室温下用硼氢化钠的碱性溶液处理相应的氯化季铵或溴化季铵,可以轻松制备季铵化硼氢化物。
Imidazole Promoted Highly Efficient Large-Scale Thiol-Free Synthesis of Symmetrical Disulfides in Aqueous Media
作者:Babak Mokhtari、Ali Reza Kiasat、Javid Monjezi
DOI:10.1080/10426507.2014.1003643
日期:2015.10.3
Abstract A highly efficient and environmentally friendly method for the imidazole promoted preparation of symmetrical organic disulfides fromBuntesalts is described. This thiol-free procedure produces the desired disulfides even on a large scale by reaction of Buntesalts with imidazole in good to high yields in aqueous media.
Potassium xanthate-promoted reductive sulfuration reaction: from aldehydes to thiol, disulfide, and thioester derivatives
作者:Yingqi Feng、Jinli Nie、Sijie Xie、Ziqing He、Huanliang Hong、Jian Li、Yubing Huang、Lu Chen、Yibiao Li
DOI:10.1039/d3cc05637f
日期:——
developed a synthetic strategy for the direct construction of C–S bonds to obtain biologically active sulfur-containing compounds and a methodology involving the reductive sulfuration of aldehydes or ketones to obtain diverse substituted thiol, disulfide, and thioester derivatives. EtOCS2K is demonstrated as a potential substitute for the Berzelius reagent or Lawesson's reagent for the construction of
coupling reactions is developed by combining micelle and transition metal. The synergistic AGA8@Cu(I) catalyst forms by spontaneous anchoring of the in situ generated Cu(I) nanoclusters onto the AGA8 micelles and has been fully characterized by FT-IR, XPS, SEM, TEM, EDS, and ICP-OES. The catalyst is recyclable and highly effective in mediating the conversion of halides to disulfides in water at room temperature