2,2′-二硒并烟酸及其叔丁基酯的合成和结构

Synthesis and Structures of 2,2′-Diselenobisnicotinic Acid and Its Tert-Butyl Ester

本文以2-氯烟酸为原料合成了2,2′-二硒并烟酸叔丁基酯(1)及2,2′-二硒并烟酸(2),化合物1和2的结构分别用1H NMR,13CNMR,77Se NMR,元素分析和X-射线单晶结构测定技术进行了表征。在化合物1和2的晶体结构中,吡啶环和2个硒原子处于同一平面,这一结果与已报道的芳基二硒醚化合物的晶体结构完全不同。

2,2＇-diselenobisnicotinic acid tert-butyl ester （1） and 2,2＇-diselenobisnicotinic acid （2） were synthesized based on 2-ehloronieotinic acid. Compounds 1 and 2 were well characterized by ^1H NMR, ^13C NMR, ^77Se NMR, elemental analysis and X-ray single crystal structural analyses. The crystal structure of compound 1 belongs to triclinic crystal system and P1 space group, and the crystal structure of compound 2 is monoclinic crystal system and P21/c space group. In the crystal structure of 1 or 2, the two selenium atoms and two pyridyls are coplanar, which is very different from the reported crystal structures of diaromatic diselelenide. CCDC： 729953, 1; 729952, 2.