Synthesis and characterization of 3,5-lutidinyl chalcogen and -dichalcogen compounds: X-ray crystal structure of bis(3,5-dimethyl-2-pyridyl) diselenide and 2,6-bis(selenomethyl)-3,5-lutidine
作者:Jaspreet S. Dhau、Amritpal Singh、Rupy Dhir
DOI:10.1016/j.jorganchem.2010.10.047
日期:2011.5
The synthesis of 3,5-lutidinyl chalcogen and -dichalcogen compounds has been described by a method involving selective mono- and dilithiation of 3,5-lutidine (1) ring. The selective mono- and dilithiation of 1 has been achieved by reacting BF3-complexed 3,5-lutidine (2) with 1 and 2 equiv of LTMP/LDA respectively. The subsequent insertion of elemental selenium followed by aerial oxidation or quenching
已经通过一种涉及3,5-二甲基吡啶(1)环的选择性单和双锂化的方法描述了3,5-二吡啶基硫族元素和二卤素化合物的合成。通过使BF 3络合的3,5-二甲基吡啶(2)分别与1和2当量的LTMP / LDA反应,可以实现1的选择性单和双锂化。随后插入元素硒,然后进行空气氧化或用碘甲烷淬灭,导致形成二(3,5-二甲基-2-吡啶基)二硒化物(5)和2,6-二(硒甲基)-3,5-二甲基吡啶(7) 分别。另外,首次报道了在相同的二甲基吡啶环中硫和硒原子的顺序结合。也已经报道了(5)的单晶X射线研究,其罕见的C – Se – Se – C扭转角为180°(4),以及(7)。