A catalytic system consisting of bis(4-methoxyphenyl)selenide and 4-(dimethylamino)pyridine (DMAP) has been developed for the regioselective synthesis of medium-sized bromo/iodo lactones and bromooxepanes possessing high transannular strain. 77Se NMR, mass spectrometry...
bibenzyls and related ethane derivatives in high yields. Other diselenides were easily caused to cleave to give various aromatic and aliphatic olefins in good yields together with elemental selenium. Lepidopterene, [2.2]paracyclophane, and benzocyclobutene were prepared by thermal cleavage of their corresponding phenylselenomethyl-substituted compounds as an application of the pyrolysis concerned.
Synthesis of diselenides and selenides from elemental selenium
作者:Alain Krief、Michel Derock
DOI:10.1016/s0040-4039(02)00277-0
日期:2002.4
Sodium hydride is able to reduce elemental selenium to sodium diselenide (Na2Se2), but not to sodium selenide (Na2Se). Dialkyl diselenides and even dialkyl selenides, including unsymmetrical dialkyl selenides, can be nevertheless synthesized using the proper Se/NaH ratio (1/1 or 1/2).
氢化钠能够将元素硒还原为二硒化钠(Na 2 Se 2),但不能还原为硒化钠(Na 2 Se)。尽管如此,仍可以使用适当的Se / NaH比(1/1或1/2)合成二烷基二硒化物,甚至二烷基硒化物,包括不对称的二烷基硒化物。
Electrochemical synthesis of organochalcogenides in aqueous medium
作者:Pedro B. Ribeiro Neto、Sonydelane O. Santana、Guillaume Levitre、Danilo Galdino、Jadson L. Oliveira、Rogério T. Ribeiro、Maria E. S. B. Barros、Lothar W. Bieber、Paulo H. Menezes、Marcelo Navarro
DOI:10.1039/c5gc01869b
日期:——
The electrochemical preparation of telluride, selenide and sulfide ions was carried out in NaOH aqueous solution, using a two compartment cell. Organochalcogenides were prepared from halogenated compounds in a two...
Reactions of Selenobenzamide and Alkyl Halides. Synthesis of Dialkyl Selenides and Diselenides
作者:Xiao-Bo Zhang、Ming-De Ruan、Wei-Qiang Fan
DOI:10.1080/00397919608004792
日期:1996.12
Abstract In the absence of base, the reaction of selenooenzamide with alkyl halides gives the dialkyl diselenides as the major product. While the reaction of selenobenzamide and an alkyl halide is carried out in a 1:2 molar ratio and in the presence of strong base, the dialkyl selenides predominate.