- Weak base-promoted selective rearrangement of oxaziridines to amidesviavisible-light photoredox catalysis
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The selective rearrangement of oxaziridines to amidesviaa single electron transfer (SET) pathway is unexplored. In this study, we present a weak base-promoted selective rearrangement of oxaziridines to amidesviavisible-light photoredox catalysis. The developed method shows excellent functional group tolerance with a broad substrate scope and good to excellent yields. Furthermore, control experiments and density functional theory (DFT) calculations are performed to gain insight into the reactivity and selectivity.
- Park, Jin,Park, Sehoon,Jang, Gwang Seok,Kim, Ran Hui,Jung, Jaehoon,Woo, Sang Kook
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supporting information
p. 9995 - 9998
(2021/10/06)
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- CoFe2O4?SiO2-NH-βCD-BF3 as a supramolecular nanocomposite: Synthesis, characterization and catalytic activity
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This manuscript describes synthesis of BF3-functionlized β-cylcodextrine grafted magnetic CoFe2O4 nanaoparticles as a hybrid magnetic nano-composite (CoFe2O4?SiO2-NH-βCD-BF3). The CoFe2O4?SiO2-NH-βCD-BF3 was fabricated by grafting of 6-O-toluenesulfonyl cyclodextrin (6-Ts-βCD) to 3-aminopropyl triethoxysilane coated magnetic CoFe2O4?SiO2 nanoparticles followed by combination with BF3. The CoFe2O4?SiO2-NH-βCD-BF3was characterized by FT-IR, TGA, VSM and SEM techniques. The feasibility of using CoFe2O4?SiO2-NH-βCD-BF3 as a magnetically recoverable catalyst was confirmed in the modified-Ritter reaction. The result showed that this novel nano-composite could serve as an efficient nanoreactor bearing super-acidic sites formed by immobilized BF3 and reuse at least for 6 times without loss in activity.
- Hamadi, Hosein,Zanjani, Zohreh,Yadollahi, Mahtab
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- A Visible-Light-Driven, Metal-free Route to Aromatic Amides via Radical Arylation of Isonitriles
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The photochemical metal-free carboamidation of aryl radicals has been exploited for the preparation of aromatic amides, including hetero- and polyaromatic derivatives, under visible light irradiation of arylazo sulfones in the presence of isocyanides in aqueous acetonitrile. The process was useful for the smooth preparation of the antidepressant moclobemide. (Figure presented.).
- Malacarne, Marco,Protti, Stefano,Fagnoni, Maurizio
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supporting information
p. 3826 - 3830
(2017/11/15)
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- Atom economical synthesis of: N -alkylbenzamides via the iron(III) sulfate catalyzed rearrangement of 2-alkyl-3-aryloxaziridines in water and in the presence of a surfactant
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A green and mild synthetic route to N-alkylbenzamides involves eco-friendly one pot synthesis of 2-alkyl-3-aryloxaziridines from N-alkylamines and benzaldehydes followed by iron(iii) sulfate catalyzed rearrangement to the corresponding amides in water as the solvent and in the presence of sodium dodecyl sulfate as the surfactant. This green approach affords N-alkylbenzamides in high overall yields under simple and minimum manipulation.
- Kra?em, Jamil,Ollevier, Thierry
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supporting information
p. 1263 - 1267
(2017/08/15)
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- Bu4NI-Catalyzed Oxygen-Centered Radical Addition between Acyl Peroxides and Isocyanides
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A novel oxygen-centered radical addition between acyl peroxides and isocyanides has been developed. A diverse collection of valuable arylcarboxyamides were easily synthesized by this protocol. From the preliminary mechanistic study, the elimination of carbon dioxide affords the product via an intramolecular rearrangement.
- Chen, Meng,Li, Yang,Tang, Hong,Ding, Hao,Wang, Kai,Yang, Lingen,Li, Cuiting,Gao, Meng,Lei, Aiwen
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supporting information
p. 3147 - 3150
(2017/06/23)
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- NOVEL INHIBITOR COMPOUNDS OF PHOSPHODIESTERASE TYPE 10A
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The present invention relates to novel compounds of the formula I which are inhibitors of phosphodiesterase type 10A and to their use for the manufacture of a medicament and which thus are suitable for treating or controlling of medical disorders selected from neurological disorders and psychiatric disorders, for ameliorating the symptoms associated with such disorders and for reducing the risk of such disorders
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Paragraph 1094; 1095
(2013/05/21)
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- SO42-/CexZr1-xO2-catalyzed synthesis of N-tert-butylamides from various nitriles under solvent-free conditions
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The synthesis of N-tert-butylamides using SO4 2-/CexZr1-x O2 catalysts under solvent-free conditions is reported. The methodology has several advantages such as reusability of the catalyst, solvent-free conditions, easy workup, and comparable yield of N-tert-butylamides. A variety of aliphatic, aromatic, and acid-sensitive substrates give high to moderate yields of the corresponding N-tert-butylamides. Surface acidities of the catalysts were correlated with the results obtained. To the best of our knowledge, this is the first report of a modified Ritter reaction on SO42-/CexZr1-x O2 using tert-butyl acetate as carbocationic source.
- Kahandal, Sandeep S.,Kale, Sandip R.,Disale, Shamrao T.,Jayaram, Radha V.
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experimental part
p. 738 - 740
(2012/09/22)
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- Sulfated tungstate: An efficient catalyst for the Ritter reaction
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The use of sulfated tungstate as an efficient and reusable catalyst for the preparation of amides from alcohols and nitriles via the Ritter reaction pathway is discussed. The reaction proceeds under solvent free conditions. The Royal Society of Chemistry.
- Katkar, Kamlesh V.,Chaudhari, Pramod S.,Akamanchi, Krishnacharya G.
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supporting information; experimental part
p. 835 - 838
(2011/05/15)
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- Iodine-catalyzed one-pot synthesis of amides from nitriles via Ritter reaction
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Ritter reactions of alcohols and tert-butyl acetate with various nitriles were performed using iodine as a mild and effective catalyst under heating conditions to afford the corresponding amides in good to excellent yields.
- Theerthagiri, Palani,Lalitha, Appaswami,Arunachalam, Pirama Nayagam
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supporting information; experimental part
p. 2813 - 2819
(2010/07/04)
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