91585-33-0Relevant articles and documents
Mechanochemical Synthesis of Active Magnetite Nanoparticles Supported on Charcoal for Facile Synthesis of Alkynyl Selenides by C?H Activation
Mohan, Balaji,Park, Ji Chan,Park, Kang Hyun
, p. 2345 - 2350 (2016/07/28)
Magnetite (Fe3O4) nanoparticles supported on charcoal, graphene, or SBA-15 were prepared by a simple solid-state grinding technique and subsequent thermal treatment. The Fe3O4 nanoparticles supported on activated charcoal exhibited high catalytic activity and furnished good yields of the alkynyl selenide product in the cross-coupling reaction of diphenyl diselenide and alkynes through activation of C?H and Se?Se bonds under ecofriendly conditions, surpassing traditional copper-based catalysts to effect the same organic transformation.
An efficient and general procedure for the synthesis of alkynyl chalcogenides (selenides and tellurides) by alumina-supported Cu(II)-catalyzed reaction of alkynyl bromides and diphenyl dichalcogenides
Ahammed, Sabir,Bhadra, Sukalyan,Kundu, Debasish,Sreedhar, Bojja,Ranu, Brindaban C.
, p. 10542 - 10549 (2013/01/15)
Alumina (Al2O3) supported Cu(II) efficiently catalyzes the reaction of alkynyl bromides and diphenyl diselenides and ditellurides in presence of Zn dust or indium(I) bromide to provide the corresponding alkynyl selenides and tellurides. The reactions of a wide variety of substituted alkynyl bromides have been addressed. The zinc dust or InBr is required for the cleavage of diphenyl selenides/tellurides. The mechanism of the reaction is established. The yields of products are high and the catalyst is recycled.
A convenient synthetic route for alkynylselenides from alkynyl bromides and diaryl diselenides employing copper(I)/imidazole as novel catalyst system
Sharma, Anuj,Schwab, Ricardo S.,Braga, Antonio L.,Barcellos, Thiago,Paix?o, Marcio W.
, p. 5172 - 5174 (2008/12/20)
A mild, convenient, and effective strategy is developed for the synthesis of alkynyl selenides from alkynyl bromides and respective diselenides using CuI/imidazole as a novel catalyst system with Mg as additive. The procedure affords the title compounds in moderate to good yield (51-89%). The main advantages of the protocol include the use of inexpensive copper catalyst, a novel Cu(I)/imidazole combination, and good yield of the products.
