Korotkikh Nikolai I, Rayenko Gennady F, Shvaika Oles P, Pekhtereva Tatyana M, Cowley Alan H, Jones Jamie N, Macdonald Charles L B
The L. M. Litvinenko Institute of Physical Organic and Coal Chemistry, Ukrainian Academy of Sciences, 70. R, Luxemburg Donetsk, 83114, Ukraine.
J Org Chem. 2003 Jul 11;68(14):5762-5. doi: 10.1021/jo034234n.
Two new, more convenient methods for the synthesis of 1,2,4-triazol-5-ylidenes are described. Four new 1,2,4-triazol-5-ylidenes have been prepared using these methods: 1-(1-adamantyl)-3,4-diphenyl-1,2,4-triazol-5-ylidene (2a), 1-(1-adamantyl)-3-phenyl-4-(p-bromophenyl)-1,2,4-triazol-5-ylidene (2b), 1-(1-adamantyl)-3-phenyl-4-(alpha-naphthyl)-1,2,4-triazol-5-ylidene (2c), and 1-(1-adamantyl)-3,4-di(p-bromophenyl)-1,2,4-triazol-5-ylidene (2d). The X-ray crystal structures of 2d and the precursor salt 1-(1-adamantyl)-3,4-di(p-bromophenyl)-1,2,4-triazolium bromide (1e) are described. Compound 2a reacts with CH(3)CN via C-H insertion to form 1-(1-adamantyl)-3,4-diphenyl-5-cyanomethyl-5H-1,2,4-triazoline (3), and 2a and 2d react with elemental sulfur and elemental selenium, respectively, to form the corresponding thione (4) and selenone (5).
描述了两种合成1,2,4 - 三唑 - 5 - 亚基的新的、更简便的方法。使用这些方法制备了四种新的1,2,4 - 三唑 - 5 - 亚基:1 - (1 - 金刚烷基)-3,4 - 二苯基 - 1,2,4 - 三唑 - 5 - 亚基(2a)、1 - (1 - 金刚烷基)-3 - 苯基 - 4 - (对溴苯基)-1,2,4 - 三唑 - 5 - 亚基(2b)、1 - (1 - 金刚烷基)-3 - 苯基 - 4 - (α - 萘基)-1,2,4 - 三唑 - 5 - 亚基(2c)和1 - (1 - 金刚烷基)-3,4 - 二(对溴苯基)-1,2,4 - 三唑 - 5 - 亚基(2d)。描述了2d及其前体盐1 - (1 - 金刚烷基)-3,4 - 二(对溴苯基)-1,2,4 - 三唑溴化物(1e)的X射线晶体结构。化合物2a通过C - H插入与CH(3)CN反应形成1 - (1 - 金刚烷基)-3,4 - 二苯基 - 5 - 氰甲基 - 5H - 1,2,4 - 三唑啉(3),并且2a和2d分别与元素硫和元素硒反应形成相应的硫酮(4)和硒酮(5)。