Silica: An efficient catalyst for one-pot regioselective synthesis of dithioethers

Kundu, Samir; Roy, Babli; Basu, Basudeb

doi:10.3762/bjoc.10.5

Cited by 9 publications

(2 citation statements)

References 41 publications

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“…Kundu and co‐workers described the selective synthesis of 1,2‐dithioethers 151 and 1,3‐dithioethers 152 via solvent‐free and metal‐free one‐pot tandem reactions of allyl bromide 153 a with an excess of the thiol 3 (Scheme ). When dry, pre‐calcinated silica gel is used, 1,2‐dithioethers 151 (the Markovnikov adducts) are exclusively obtained after 6–10 h of reaction in 65–91 % yields.…”

Section: Synthesis Of Chalcogen Ethersmentioning

confidence: 99%

Synthesis of Organochalcogen Compounds using Non-Conventional Reaction Media

et al. 2016

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This review is dedicated to the memory of Prof. Nicola Petragnani, a pionner in the chemistry of selenium and tellurium in Brazil, who passed away on December 5, 2015.Organochalcogen compounds (containing S, Se and Te) are interesting either for use as an intermediate in the synthesis of complex molecules or for the exploitation of their biological properties. The growing in the number of papers on the synthesis and application of organochalcogen compounds has been accompanied by a concern about how they are prepared. Here, we provide a comprehensive and updated review on re-cent synthetic methods available for their synthesis using alternative solvents or solvent-free conditions and non-classical energy sources (microwaves irradiation, sonochemistry and mechanochemistry). Organized in fourteen sections, this review brings the more than one hundred alternative methods described so far to access organic compounds containing selenium, tellurium and sulfur.[a] Prof.

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Section: Synthesis Of Chalcogen Ethersmentioning

confidence: 99%

Synthesis of Organochalcogen Compounds using Non-Conventional Reaction Media

et al. 2016

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“…The same authors also utilized the catalytic activity of SiO2 NPs in the bis-Michael addition of active methylene compounds to conjugated alkenes, 275 which was considered possible only with a few catalysts, like ruthenium complex 276 and basic ionic liquid catalyst 277,278 . Kundu et al 279 reported using a commercial silica gel for dithioethers synthesis. By controlling the moisture level of the silica gel (dry/moistened), the authors were able to conduct the regioselective synthesis of 1,2-and 1,3-dithioethers at room temperature by reacting a variety of aromatic thiols with alkyl bromide.…”

Section: Catalytic Activities Of Silica Nanoparticlesmentioning

confidence: 99%

Silicon-containing nanoparticles: from functional materials to real-life applications

Yin

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Silicon-containing nanoparticles are considered a promising class of materials with exciting physical properties and the potential to revolutionize many emerging application areas. This Chapter introduces the fundamental aspects of silicon-containing nanoparticles and their most common production approaches. In addition, we provide a comprehensive overview of the frontiers of silicon-containing nanoparticle research for the growing fields of printable Silicon-containing electronics, theranostics, nanocellular polymer foaming, and catalysis. We include an introduction to readily applicable particle surface modification strategies as well. Finally, the limitations and challenges for the successful commercialization of silicon-containing nanoparticles in the application fields mentioned are also presented and discussed.

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