Preparation and characterization of symmetrical bis[4-chloro-2-pyrimidyl] dichalcogenide (S, Se, Te) and unsymmetrical 4-chloro-2-(arylchalcogenyl) pyrimidine: X-ray crystal structure of 4-chloro-2-(phenylselanyl) pyrimidine and 2-(p-tolylselanyl)-4-chloropyrimidine
作者:K.K. Bhasin、Ekta Arora、S.K. Mehta、T.M. Klapoetke
DOI:10.1016/j.jorganchem.2010.09.010
日期:2011.2
6-dimethyl-2-pyrimidyl, 2-pyridyl, 4-methyl-2-pyridyl). All the newly prepared symmetrical and unsymmetrical pyrimidyl chalcogen compounds have been thoroughly characterized with the help of various spectroscopic techniques viz., NMR (1H, 13C, 77Se), FT-IR and mass spectrometry (in representative cases). The crystal structures of 4-chloro-2-(phenylselanyl) pyrimidine and 2-(p-tolylselanyl)-4-chloropyrimidine
首次成功地尝试了用亲核二硫代阴离子E 2 2选择性取代2,4-二氯嘧啶C-2位置的氯,从而成功合成了新型的多核嘧啶硫属元素(S / Se / Te)衍生物。-(E = S,Se,Te),得到双[4-氯-2-嘧啶基]二卤化双异氰酸酯。2,4-二氯嘧啶与芳基氯化物相比具有高度亲电性质,可通过仅在2,4-C的C-2位置取代氯来进一步开发制备各种4-氯-2-(芳基硫属酰基)嘧啶化合物。二氯嘧啶与各种硫属轴承芳基阴离子是-(Ar为苯基,1-萘基,p-甲苯基,4,6-二甲基-2-嘧啶基,2-吡啶基,4-甲基-2-吡啶基)。所有的新制备的对称和非对称嘧啶基硫属元素化合物已被彻底其特征在于与各种光谱技术的帮助下即,NMR(1 H,13 C,77 Se)中,FT-IR和质谱(在代表例)。通过X射线晶体学测定了4-氯-2-(苯硒基)嘧啶和2-(对甲苯基硒基)-4-氯嘧啶的晶体结构。