Results 31 to 40 of about 358,569 (255)
Tandem dinucleophilic cyclization of cyclohexane-1,3-diones with pyridinium salts [PDF]
Beilstein Journal of Organic Chemistry, 2013 The cyclization of cyclohexane-1,3-diones with various substituted pyridinium salts afforded functionalized 8-oxa-10-aza-tricyclo[7.3.1.02,7]trideca-2(7),11-dienes.
Mostafa Kiamehr +7 more
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MolbankWe report the synthesis and characterization of the novel pyridinium salts from (E)-2-(pyridin-4-ylmethylene)hydrazine-1-carboximidamide. The pyridinium salts were obtained via the reaction of guanylhydrazone derived from pyridine-4-carbaldehyde with ...
Fatemeh Ataie Alani +3 more
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, 2012 Pyridinium salts, both molecular and polymeric, are an interesting class of multifunctional materials that exhibit liquid-crystalline and light-emitting properties. Moreover, their properties can be easily tuned by introducing new types of anions or by modifying their chemical structures.
Jo, Tae Soo
openaire +2 more sources
Journal of the American Chemical Society, 2021 Tryptophan (Trp) plays a variety of critical functional roles in protein biochemistry however, owing to its low natural frequency and poor nucleophilicity, the design of effective methods for both single protein bioconjugation at Trp as well as for in ...
Michael, Taylor +9 more
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Organic Letters, 2020 New chalcone-based pyridinium salts have been successfully exploited, which could smoothly participate in the highly diastereoselective dearomatization with binucleophilic enaminones by taking advantage of their multiple reactive sites to construct ...
Zhao-Hui Cui (6872906) +5 more
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Enantioselective functionalization at the C4 position of pyridinium salts through NHC catalysis. [PDF]
Nat Commun, 2022 A catalytic method for the enantioselective and C4-selective functionalization of pyridine derivatives is yet to be developed. Herein, we report an efficient method for the asymmetric β-pyridylations of enals that involve N-heterocyclic carbene (NHC ...
Choi H, Mathi GR, Hong S, Hong S.
europepmc +2 more sources
Pyridinium salts: from synthesis to reactivity and applications
, 2018 This review highlights the pyridinium salts in terms of their natural occurrence, synthesis, reactivity, biological properties, and diverse applications.
Luís P. N. Rebelo +3 more
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Grignard Reagent Addition to Pyridinium Salts: A Catalytic Approach to Chiral 1,4-Dihydropyridines. [PDF]
ACS CatalCatalytic dearomatization of pyridinium salts is a powerful technique for constructing chiral N-heterocycles, which are crucial in alkaloid natural products and drugs.
Somprasong S +2 more
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A method for the nucleophilic fluorination of 4-dimethylaminopyridine (DMAP) pyridinium salts
Results in Chemistry, 2023 Fluorinated organic compounds have proven to be beneficial in various industries. Recent research has utilized quaternary ammonium salts as precursors for fluorinations using the radioactive isotope 18F.
Derek Cressy +4 more
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2-(1-Methoxycarbonyl-2-phenyleth-1-yl)-1-benzylpyridin-1-ium Bromide
Molbank, 2023 In this work, we report the unexpected conversion of a pyridine derivative into the corresponding N-benzylated pyridinium salt due to the presence of unreacted benzyl bromide in the crude product. This transformation was observed at room temperature in a
Lorenzo Suigo +2 more
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