Some synthetic applications of 2,3-Dichloro-N-phenylmaleimide: A novel synthesis of 2-phenylpyrrolo[3,4-b]quinoxaline-1,3-diones. I
摘要:
2,3-Dichloro-N-phenylmaleimide 2 undergoes nucleophilic substitution reactions by a variety of nucleophiles giving either monosubstituted 5 or disubstituted 3 products. Treatment of 5 with sodium azide at room temperature results in cyclization to the corresponding 2-phenylpyrrolo[3,4-b]quinoxaline-1,3-diones 6, while at higher temperatures 5 is reduced to the 2-amino-3-amino-N-phenylmaleimides 7. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthese von chinoxalin- und indol-2,3-dicarbonsäureimiden
作者:M. Augustin、M. Köhler、J. Faust、M.M. Al-Holly
DOI:10.1016/0040-4020(80)80077-9
日期:1980.1
Quinoxaline- and indole-2,3-dicarboxyclic imides 7, 8 are prepared by reaction of halogenactive maleimides 1, 2 with sodium azide. Further derivatives of these heterocyclic series are available by secondary reactions of the imides.