Synthesis of<i>bis</i>-3-alkyl-5-arylhydantoins and<i>bis</i>-3-alkyl-5-arylthiohydantoins separated by two and four carbon atoms
作者:O. Leroy Salerni、W. Kent Van Tyle、David J. Mustra、Kevin S. Emerich、Douglas E. Fuerst、M. Zia-Ebrahimi
DOI:10.1002/jhet.5570360511
日期:1999.9
adducts derived from alkylation product 4 required hydrolysis to induce cyclization. Compounds 1b-1f were obtained in this way. Compounds with a four carbon bridge were obtained by reaction of two equivalents of methyl α-bromophenyl acetate and 1,4-diaminobutane to produce N,N'-bis-[(α-phenyl-α-methoxycarbonyl)methyl]butylenediamine 6. The isothiocyanate or isocyanate adducts from 6 cyclized, without
描述了使用乙二胺和1,4-二氨基丁烷作为间隔基的1,2-和1,4-双-硫代乙内酰脲和乙内酰脲的合成。通过将乙二胺与两当量的N-叔丁基-α-(对甲苯磺酰氧基)苯基乙酰胺3烷基化来合成包含两个碳桥的化合物。3的异硫氰酸苯酯加合物在回流的甲苯中环化形成1a。衍生自烷基化产物4的其他异硫氰酸酯或异氰酸酯加合物需要水解以诱导环化。以这种方式获得化合物1b-1f。通过使两个当量的乙酸甲酯α-溴苯甲烷和1,4-二氨基丁烷反应制得具有四个碳桥的化合物N,N’-双-[((α-苯基-α-甲氧基羰基)甲基]丁烯二胺6。由6得到的异硫氰酸酯或异氰酸酯加合物在没有水解的情况下环化以形成化合物2a-2e。