Straightforward Synthesis of 2-Anilinobenzoxazoles and -benzothiazoles via Mechanochemical Ball-milling-promoted One-pot Reactions
作者:Ze Zhang、Fang-Jian Wang、Hao-Hao Wu、Ya-Jun Tan
DOI:10.1246/cl.141127
日期:2015.4.5
Under mechanochemical ball-milling and solvent-free conditions, a series of 2-anilinobenzoxazoles and -thiazoles were synthesized directly from the one-pot reaction of anilines, CS2, and 2-aminophenol and -thiophenol. This protocol exhibits the following advantages: free or cheap use of a cyclodesulfurization reagent, no separation of in situ generated isothiocyanate, short reaction time, and simple work-up procedure.
<i>N</i>-Iodosuccinimide mediated intramolecular oxidative C(<i>sp</i><sup>2</sup>)-S bond formation for the synthesis of 2-aminobenzothiazole derivatives
作者:Atul A. Jichkar、Imran A. Opai、Nandkishor N. Karade
DOI:10.1080/17415993.2021.1989436
日期:2022.3.4
An extremely efficient synthetic method for the preparation of 2-aminobenzothiazole derivatives starting from arylthioureas by using N-iodosuccinimide has been reported. This protocol features a mild reaction conditions, a short reaction time, and metal-free oxidative conditions for C (sp2)-S bond construction.
This study reports a new synthetic approach leading to N-arylbenzo[d]thiazol-2-amine derivatives. Our synthetic method involves a S-alkylation reaction of various benzo[d]thiazole-2-thiols and 2-chloro-N-arylacetamides and a subsequent fragmentation step via Smiles rearrangement. This synthetic procedure is widely applicable, affords the N-arylbenzo[d]thiazol-2-amine derivatives in good to excellent
这项研究报道了一种新的合成方法,可产生N-芳基苯并[ d ]噻唑-2-胺衍生物。 我们的合成方法涉及各种苯并[ d ]噻唑-2-硫醇和 2-氯-N-芳基乙酰胺的S-烷基化反应以及随后通过Smiles重排进行的断裂步骤。该合成方法应用广泛,以良好至优异的收率提供N-芳基苯并[ d ]噻唑-2-胺衍生物,并且在温和条件下使用无毒且较便宜的化学品。
Cu(<scp>ii</scp>)-catalyzed C–N coupling of 2-aminobenzothiazoles with boronic acids at room temperature