Elemental sulfur promoted condensation of indoles and 1,2-phenylenediamines
作者:Tan N. Huynh、Danh T. Tran、Tung T. Nguyen
DOI:10.1016/j.tetlet.2023.154360
日期:2023.2
limited to certain substrates. Herein we report a method for direct annulation of commercial indoles and 1,2-phenylediamines towards the synthesis of 6H-indolo[2,3-b]quinoxalines. Reactions proceeded in the presence of elemental sulfur, 4-(dimethylamino)pyridine (DMAP) base, and DMSO solvent. An array of 6H-indolo[2,3-b]quinoxalines which bearing functionalities such as unprotected phenol, pyrazole
6 H-吲哚[2,3- b ]喹喔啉的合成通常需要使用非商业起始原料,因此仅限于某些底物。在此,我们报告了一种将商用吲哚和 1,2-苯二胺直接环化以合成 6 H -吲哚[2,3- b ]喹喔啉的方法。反应在元素硫、4-(二甲基氨基)吡啶 (DMAP) 碱和 DMSO 溶剂存在下进行。以中等收率获得了一系列 6 H -吲哚并 [2,3- b ] 喹喔啉,它们具有未保护的苯酚、吡唑、氰基和仲胺等功能。
Reaction of o-phenylenediamine with isatins
作者:A. V. Ivashchenko、A. G. Drushlyak、V. V. Titov
DOI:10.1007/bf00514308
日期:1984.5
IVASHCHENKO, A. V.;DRUSHLYAK, A. G.;TITOV, V. V., XIMIYA GETEROTSIKL. SOEDIN., 1984, N 5, 667-672
作者:IVASHCHENKO, A. V.、DRUSHLYAK, A. G.、TITOV, V. V.
DOI:——
日期:——
GRACHEV, V. T.;IVASHCHENKO, S. P.;IVANOVA, O. A.;GERASIMOV, B. G.;SARKISY+, XIMIYA GETEROTSIKL. SOEDIN., 1984, N 6, 840-842
作者:GRACHEV, V. T.、IVASHCHENKO, S. P.、IVANOVA, O. A.、GERASIMOV, B. G.、SARKISY+