Venting-while-Heating Microwave-Assisted Synthesis of 3-Arylthioindoles
摘要:
We report the first example of venting-while-heating microwave-assisted synthesis of a small library of 3-arylthioindoles. Compounds were prepared in excellent isolated yields (90-98%) within 4 min in a closed vessel by treating indoles with disulfides in the presence of sodium hydride in anhydrous N,N-dimethylformamide. The method was not affected by electron-donating and -withdrawing substituents both on 3-arylthio moiety and at 2- and 5-positions of the indole nucleus.
Base-mediated chalcogenoaminative annulation of 2-alkynylanilines for direct access to 3-sulfenyl/selenyl-1<i>H</i>-indoles
作者:Wei-Ching Chen、Rekha Bai、Wan-Lin Cheng、Chun-Yu Peng、Daggula Mallikarjuna Reddy、Satpal Singh Badsara、Chin-Fa Lee
DOI:10.1039/d3ob00279a
日期:——
An efficient and transition metal-free synthesis of 3-sulfenyl/selenyl-1H-indoles via a base-assisted chalcogenoaminative annulation of 2-alkynyl aniline with disulfides/diselenides is described. A series of 2-alkynylanilines were found compatible with dichalcogenides in this transformation providing 3-sulfenyl/selenyl-1H-indoles in good to excellent yields. The presented methodology has the advantages
描述了通过2-炔基苯胺与二硫化物/二硒化物的碱辅助硫族胺化环化,高效且无过渡金属的 3-sulfenyl/selenyl-1 H - indoles合成。发现一系列 2-炔基苯胺与二硫化物在该转化中相容,可提供 3-sulfenyl/selenyl-1 H -indoles,产率良好至极佳。所提出的方法具有易于获得的原材料、官能团耐受性以及提供获取 3-sulfenylindoles 和 3-selenylindoles 的广泛底物的优点。