An Efficient Route to Novel 4,5‐Di‐ and 2,4,5‐Tri Substituted Imidazoles from Imidazo[1,5‐<i>a</i>]‐1,3,5‐triazine (5,8‐Diaza‐7,9‐dideazapurine) Derivatives
作者:Bozenna Golankiewicz、Piotr Januszczyk、Joanna Zeidler、Mariusz Popenda
DOI:10.1081/ncn-120027822
日期:2004.1.1
Two new types of imidazole derivatives: N-(2-R-1-5-R-2-1H-imidazol-4-yl) thioureas 7a-g and N-(2-R-1-5-R-2-1H-imidazol-4-yl) formamides 8b,c,g were obtained in high yields by the hydrolytic degradation of 6-R-1-8-R-2-2-thioxo-2,3-dihydroimidazo[1,5-a]-1,3,5-triazin-4(1H)-ones 5a-g and 6-R-1-8-R-2-imidazo[l,5-a]-1,3,5-triazin-4(3H)-ones 6b,c,d, respectively. The tautomeric preferences of the new imidazoles were determined.