2-Amino-1-methyl-1<i>H</i>-imidazole-4,5-dione: Synthesis and the Dimroth Type Rearrangement to Creatone (2-Methyl-amino-1<i>H</i>-imidazole-4,5-dione)
作者:Hiroshi Yamamoto、Chikara Ohira、Toshiaki Aso、Wolfgang Pfleiderer
DOI:10.1246/bcsj.60.4115
日期:1987.11
gave 2-t-butoxycarbonylamino-1-methyl-1,5-dihydro-4H-imidazol-4-one, which was oxidized with mercury(II) acetate to the corresponding 1H-imidazole-4,5-dione. Deprotection of the amino group of this dione afforded the title compound 4, which in turn was shown to undergo a facile, Dimroth-type rearrangement under weakly acidic conditions to give creatone, thus proving 4 to be the key intermediate in
用 BOC-ON 处理肌酐得到 2-t-butoxycarbonylamino-1-methyl-1,5-dihydro-4H-imidazol-4-one,用乙酸汞 (II) 将其氧化为相应的 1H-imidazole-4, 5-二酮。对该二酮的氨基进行脱保护得到标题化合物 4,该化合物在弱酸性条件下进行了简单的 Dimroth 型重排,得到肌酸,从而证明 4 是形成肌酸的关键中间体各种起始材料。讨论了这些化合物之间的平衡。