Synthesis and structure elucidation of the condensation products between thiophene dicarbaldehydes and aromatic amines. Potential analgesic and anti-inflammatory agents
作者:F. Benachenhou、M. A. Mesli、M. El Borai、B. Hanquet、R. Guilard
DOI:10.1002/jhet.5570250551
日期:1988.9
presence of 2-mercaptoethanol to yield N-aryl-5,6-dihydro-4-oxo-4H-thieno[3,4-c]pyrroles 2 and N-aryl-4-arylimino-5,6-dihydro-4H-thieno[3,4-c]pyrroles 3, while thiophene 2,3-dicarbaldehyde 4 reacts with aromatic amines to give N-aryl-5,6-dihydro-6-oxo-4H-thieno[2,3-c]pyrroles 5 in good yields. Labeling experiments and nmr spectral analysis give evidences for the possible reaction mechanism.
噻吩-3,4-二甲醛1在2-巯基乙醇的存在下反应生成N-芳基-5,6-二氢-4-氧代-4 H-噻吩并[3,4- c ]吡咯2和N-芳基- 4-芳基-5,6-二氢-4 H-噻吩并[3,4- c ]吡咯3,而噻吩2,3-二甲醛4与芳族胺反应生成N-芳基-5,6-二氢-6- oxo-4 H -thieno [2,3- c ]吡咯5的收率高。标记实验和核磁共振光谱分析为可能的反应机理提供了证据。