几种二卤代吡啶与PhSeNa或HeSeLi在DMF中的反应提供了高产率的单取代产物。用过量的PhSeNa容易得到双(苯基硒烯基)吡啶,而用过量的MeSeLi,由于S N 2取代过程,最初形成的卤代吡啶基甲基硒化物而不是芳香族取代基发生脱烷基反应,得到卤代吡啶基硒酸根阴离子。加入-丙基碘化物,得到卤代吡啶基-丙基硒化物。用过量的MeSeLi处理这些化合物可得到(获得了直接用烷基化剂处理的-丙基硒烯基)吡啶基硒烯酸根阴离子,并获得了高产率的双(烷基硒烯基)吡啶。所有这些亲核芳族取代反应都是完全区域特异性的。
Dunne, Simon J.; Summers, Lindsay A.; Nagy-Felsobuky, Ellak I. von, Phosphorus, Sulfur and Silicon and the Related Elements, 1992, vol. 72, # 1-4, p. 103 - 120
Synthesis and characterization of 3-pyridylchalcogen compounds
作者:Rajeev Kumar、K.K. Bhasin、Jaspreet S. Dhau、Avtar Singh
DOI:10.1016/j.inoche.2022.109344
日期:2022.5
one-pot synthesis of 3-pyridylchalcogen (Se, Te) compounds, has been developed. Under non-cryogenic conditions, 3,3′-dipyridyl diselenide/ditelluride and other unsymmetrical derivatives were prepared by the reaction of 3-bromopyridine with the isopropyl magnesium chloride (-PrMgCl) followed by the addition of chalcogen (Se/Te) and with variety of electrophiles. The known and unknown compounds were characterized
Visible Light Photocatalyzed Direct Conversion of Aryl-/Heteroarylamines to Selenides at Room Temperature
作者:Debasish Kundu、Sabir Ahammed、Brindaban C. Ranu
DOI:10.1021/ol500567t
日期:2014.3.21
A novel strategy for the direct conversion of aryl- and heteroarylamines to selenides has been developed via diazotization of amines with tert-butyl nitrite in neutral medium followed by reaction with diaryl/diheteroaryl/dialkyl diselenides in one pot under photocatalysis at room temperature in the absence of any metal. This reaction is also applied for the synthesis of tellurides. The selenylation of heteroarylamine by this protocol is of much significance because of the difficulty in diazotization of these molecules by a standard diazotization method in acid medium.
Dunne, Simon J.; Summers, Linsay A.; Nagy-Felsobuki, Ellak I. von, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 1, p. 117 - 119
作者:Dunne, Simon J.、Summers, Linsay A.、Nagy-Felsobuki, Ellak I. von
DOI:——
日期:——
TIECCO, MARCELLO;TESTAFERRI, LORENZO;TINGOLI, MARCO;CHIANELLI, DONATELLA;+, TETRAHEDRON., 44,(1988) N 15, C. 4883-4894