Exploiting the CNC Side Chain in Heterocyclic Rearrangements: Synthesis of 4(5)-Acylamino-imidazoles
作者:Antonio Palumbo Piccionello、Silvestre Buscemi、Nicolò Vivona、Andrea Pace
DOI:10.1021/ol1013087
日期:2010.8.6
3-(α-aminobenzyl)-1,2,4-oxadiazole, which was condensed with benzaldehydes to afford the corresponding imines. In the presence of strong base, these imines underwent Boulton−Katritzky-type rearrangement to afford novel 4(5)-acylaminoimidazoles.
据报道,布尔顿-Katritzky反应的新变化,即涉及使用CNC侧链。新型的蒙脱石-K10催化3-苯甲酰基-1,2,4-恶二唑的非还原转氨作用,得到3-(α-氨基苄基)-1,2,4-恶二唑,将其与苯甲醛缩合得到相应的亚胺。在强碱存在下,这些亚胺经过Boulton-Katritzky型重排,得到新颖的4(5)-酰基氨基咪唑。