2‐Chloro‐4,5‐dihydroimidazole, Part X. Revisiting route to
<i>N</i>
‐heteroarylimidazolidin‐2‐ones
作者:Franciszek Sa̧czewski、Anita Bulakowska、Maria Gdaniec
DOI:10.1002/jhet.5570390510
日期:2002.9
The ureidation reactions of 2- and 4-picoline N-oxides with 2-chloro-4,5-dihydroimidazole are described. A mechanism of novel thioureidation reaction of 4-picoline N-oxide with 2-(4,5-dihydro-1H-imidazol-2-ylthioxy)-4,5-dihydro-1H-imidazole is proposed. Structural assignment is confirmed by 1H and 13C nmr as well as by X-ray crystallography.
描述了2-和4-甲基吡啶N-氧化物与2-氯-4,5-二氢咪唑的缩合反应。提出了4-甲基吡啶N-氧化物与2-(4,5-二氢-1 H-咪唑-2-基硫醇基)-4,5-二氢-1 H-咪唑的新型硫脲化反应机理。通过1 H和13 C nmr以及X射线晶体学确定结构归属。