Reductive coupling of 1,3-dimethyluracils with benzophenone by low-valent titanium: unusual two-to-one coupling
作者:Naoki Kise、Shinta Akazai、Toshihiko Sakurai
DOI:10.1016/j.tetlet.2011.09.154
日期:2011.12
The reductive coupling of 1,3-dimethyluracil with benzophenone by Zn–TiCl4 in THF gave unusual two-to-one adduct and its further reduced product. The reductive coupling of 1,3-dimethyl-5-fluorouracil with benzophenone by Zn–TiCl4 also gave two-to-one adduct. 1,3-Dimethylthymine was, however, completely inert under the same conditions.
Zn-TiCl 4在THF中将1,3-二甲基尿嘧啶与二苯甲酮还原偶合,得到不寻常的二对一加合物,其产物进一步还原。Zn-TiCl 4将1,3-二甲基-5-氟尿嘧啶与二苯甲酮还原偶合,也得到了一对一的加合物。然而,在相同条件下1,3-二甲基胸腺嘧啶完全是惰性的。