Efficient Synthesis of Highly Substituted Furan, Thiophene, Pyrrole and 2‐Aminothiazole Derivatives
作者:Nadia Hanafy Metwally
DOI:10.1080/00397910701575384
日期:2007.12
ester (2). This bromo derivative reacts with potassium carbonate, sodium hydrogen sulfide, aromatic amines, ammonium thiocyanate, thiourea, N‐phenylthiourea, and thiosemicarbazide to afford highly substituted furan, thiophene, pyrrole, and 2‐aminothiazole derivatives. Mechanistic explanations as well as structure elucidations are discussed.
摘要 氰基乙酸乙酯二聚体 (1) 与 N-溴代琥珀酰亚胺 (NBS) 发生溴化反应,得到 3-氨基-4-溴-2-氰基-戊-2-烯二酸二乙酯 (2)。这种溴代衍生物与碳酸钾、硫化氢钠、芳香胺、硫氰酸铵、硫脲、N-苯基硫脲和氨基硫脲反应,得到高度取代的呋喃、噻吩、吡咯和 2-氨基噻唑衍生物。讨论了机械解释以及结构说明。