Microwave Assisted Synthesis of Novel Functionalized Hydantoin Derivatives and Their Conversion to 5-(Z) Arylidene-4H-imidazoles
作者:Sukanta Kamila、Haribabu Ankati、Edward R. Biehl
DOI:10.3390/molecules16075527
日期:——
2-(Alkyl-1-yl)-1H-imidazol-5(4H)-ones 5a–n were synthesized via nucleophilic substitution of the methylsulfanyl group of the corresponding 2-(methylthio)-1H-imidazol-5(4H)-ones 3a–c with suitably substituted secondary amines. The starting 2-thioxo- imidazolidin-4-ones 2a,2b were prepared by condensation of thiohydantoin and benzo[b]-thiophene-3-carbaldehyde or benzofuran-3-carbaldehyde under microwave
2-(Alkyl-1-yl)-1H-imidazol-5(4H)-ones 5a-n 是通过相应 2-(甲硫基)-1H-imidazol-5(4H)- 的甲基硫烷基的亲核取代合成的3a-c 带有适当取代的仲胺。起始的 2-thioxo-imidazolidin-4-ones 2a,2b 是通过乙内酰脲和苯并[b]-噻吩-3-甲醛或苯并呋喃-3-甲醛在微波辐照 (MW) 条件下缩合制备的。2-甲硫基衍生物 3a-c 是通过在氢氧化钠水溶液存在下用甲基碘处理 2a-b 来制备的。