Regular paperThe palladium-catalyzed cross-coupling reaction of 9-organothio-9-borabicyclo[3.3.1]nonanes with organic electrophiles: Synthesis of unsymmetrical sulfides
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Copper(0) nanoparticles immobilized on SBA-15: A versatile recyclable heterogeneous catalyst for solvent and ligand free C–S coupling reaction from diverse substrates
2021, Microporous and Mesoporous MaterialsCitation Excerpt :Thioester containing compounds also found to be promising in numerous therapeutic areas such as diabetes, inflammation, Alzheimer's, and Parkinson's disease and cancer [1–16]. Transition metal catalysed [19–34] cross-coupling reaction of organic halides with thiols offers a useful route for the construction of aryl-sulfur bonds. The success of transition metal catalysed reaction depends on the ability of the procedure to overcome the difficulties arise due to the competitive formation of undesired S–S coupled product along with C–S coupled product and unwanted catalyst deactivation due to presence of strong metal binding thiol moieties [19].
Microwave-assisted synthesis - Catalytic applications in aqueous media
2015, Coordination Chemistry ReviewsCitation Excerpt :Sulfides and their derivatives are attractive building blocks in the synthesis of biologically active compounds [385–387] and their formation has been generally carried out by the condensation of activated alkyl halides with alkali-metal thiolates [388–390] or via the reduction of sulfones or sulfoxides using strong reducing agents such as DIBAL-H or LiAlH4 [332,391]. A growing number of synthetic methodologies deploy transition metals such as Fe [392], Co [393], Ni [394], and Cu [395,396] for CS bond formation often promoted by the addition of chelating ligands such as 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (BINAP), 2,2′-p-tolyl-phosphino-1,1′-binaphthyl (Tol-BINAP), 1,1′-bis(diphenylphosphanyl) ferrocene (DPPF), tris(dibenzylideneacetone)dipalladium (Pd2(dba)3), or phosphine-based ligands [397–404]. Velmathi et al. [405] demonstrated the ligand-free Pd-catalyzed aqueous CS coupling reactions under MW heating (Scheme 37); TBAB and NaF were required to catalyze this transformation, but the strategy could not be used for chloro-substrate.
Efficient copper-catalyzed C-S cross-coupling of heterocyclic thiols with aryl iodides
2011, TetrahedronCitation Excerpt :The formation of C(aryl)–S bonds represents a key step in the synthesis of many molecules that are of biological, pharmaceutical, and material interest.1 In the past decade, many catalytic systems of transition-metal (palladium,2 nickel,3 copper,4 cobalt,5 iron,6 and indium7) with appropriate ligands have been developed to catalyze the cross-coupling reactions of aryl halides with thiols and enable the synthesis of aryl sulfides in high yields. Heterocyclic sulfides are an important class of organic compounds, which exhibit numerous pharmaceutical activities.
Green protocols for Tsuji-Trost allylation: an overview
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Present address: Kurashiki University of Science and Art, Kurashiki 712, Japan.