Journey on Greener Pathways via Synthesis of Pd/KB Polymeric Nanocomposite as a Recoverable Catalyst for the Ligand-Free Oxidative Hydroxylation of Phenylboronic Acid and Suzuki–Miyaura Coupling Reaction in Green Solvents
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DOI: 10.1007/s10562-018-2583-1
Abstract: This paper reports a new and straightforward technique for the preparation of catalytically active palladium nanoparticle (Pd NPs) supported on the polymer surface derived from virgin polythene (Kaldnes Bio media filter) (Pd/KB nanocomposite). The morphology,… read more here.
Keywords: ligand free; oxidative hydroxylation; free oxidative; hydroxylation phenylboronic ... See more keywords
Metal-free oxidative coupling of alkyl chlorides with thiols: An efficient access to sulfoxides
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DOI: 10.1016/j.tetlet.2019.151492
Abstract: Abstract An efficient and step-economical access to sulfoxides from thiols and alkyl halides in the presence of I2O5 and DBU via direct oxidative couplings is described here. It is the first case that combined Williamson… read more here.
Keywords: free oxidative; access sulfoxides; coupling alkyl; oxidative coupling ... See more keywords
Metal-free oxidative cyclization of 2-aminobenzothiazoles and cyclic ketones enabled by the combination of elemental sulfur and oxygen
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DOI: 10.1039/c7gc02014g
Abstract: Metal-free oxidative cyclization for the one-pot synthesis of benzo[d]imidazo[2,1-b]thiazoles from 2-aminobenzothiazoles and cyclic ketones is described. Elemental sulfur combined with molecular oxygen as the benign co-oxidant was found to be unique and highly effective to… read more here.
Keywords: aminobenzothiazoles cyclic; free oxidative; metal; cyclic ketones ... See more keywords
Metal-free oxidative trifluoromethylation of indoles with CF3SO2Na on the C2 position
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DOI: 10.1039/c9ra07785e
Abstract: An efficient method of synthesizing 2-trifluoromethylindoles from indoles with easy-to-handle, cheap and low-toxic CF3SO2Na under metal-free conditions is described, which selectively introduces trifluoromethyl to indoles on the C2 position. read more here.
Keywords: free oxidative; position; indoles cf3so2na; metal free ... See more keywords
Catalyst and additive-free oxidative dual C-H sulfenylation of imidazoheterocycles with elemental sulfur using DMSO as a solvent and an oxidant.
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DOI: 10.1039/d0cc00043d
Abstract: Dual C-H sulfenylation was used to obtain 3-vulcanized imidazoheterocycles using odorless elemental sulfur under catalyst- and additive-free conditions. C-H activation of both imidazoheterocycles and arylamines/arenols/indoles was realized by a practical protocol in which DMSO served… read more here.
Keywords: additive free; catalyst additive; free oxidative; elemental sulfur ... See more keywords
Metal-Free Oxidative Coupling of Tetrahydroisoquinolines and 3-Fluorooxindoles on Water
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DOI: 10.1055/s-0039-1690213
Abstract: An efficient, metal-free oxidative coupling of tetrahydroisoquinolines and 3-fluorooxindoles on water has been developed. Using aqueous tert-butyl hydroperoxide as the oxidant, Et3N as the base, and water as the sole solvent, a variety of 3-fluorooxindoles… read more here.
Keywords: tetrahydroisoquinolines fluorooxindoles; water; free oxidative; coupling tetrahydroisoquinolines ... See more keywords