Results 21 to 30 of about 16,017 (235)
2-[5-(Pyridin-2-yl)-1,3,4-thiadiazol-2-yl]pyridin-1-ium perchlorate
IUCrData, 2017 The cation of the title molecular salt, C12H9N4S+·ClO4−, is approximately planar, with the pyridine and pyridinium rings being inclined to the central thiadiazole ring by 6.51 (9) and 9.13 (9)°, respectively.
Abdelhakim Laachir +4 more
doaj +1 more source
4-(4-Nitrobenzyl)pyridinium 5-nitrosalicylate [PDF]
, 2010 In the title salt, C12H11N2O2+·C7H4NO5−, the cations and anions interact through asymmetric cyclic pyridinium–carboxylate N—H...O,O′ hydrogen-bonding associations [graph set R12(4)], giving discrete ...
Urs D. Wermuth +3 more
core +1 more source
Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
2-[(Pyridin-2-yl)amino]pyridinium 2,4,6-trinitrophenolate
Acta Crystallographica Section E, 2014 In the cation of the title salt, C10H10N3+·C6H2N3O7−, the pyridine and pyridinium rings are linked by an intramolecular N—H...N hydrogen bond and are approximately coplanar, with a dihedral angle between their planes of 4.24 (6)°.
Kateryna A. Ohui +2 more
doaj +1 more source
Asymmetric Hydrogenation of 3‐Substituted Pyridinium Salts
Chemistry – A European Journal, 2016 AbstractThe use of an equivalent amount of an organic base leads to high enantiomeric excess in the asymmetric hydrogenation of N‐benzylated 3‐substituted pyridinium salts into the corresponding piperidines. Indeed, in the presence of Et3N, a Rh‐JosiPhos catalyst reduced a range of pyridinium salts with ee values up to 90 %.
M. Renom-Carrasco +6 more
openaire +4 more sources
Advances in BODIPY Derivatives for Antibacterial Phototherapy
Angewandte Chemie, EarlyView.This review systematically summarizes the design strategies and structure‐activity relationships of BODIPY‐based antibacterial phototherapy, covering molecular engineering of small‐molecule photosensitizers and nanoplatforms, bacterial targeting and carrier design, and discussing the challenges and future perspectives associated with clinical ...
Li Lv +9 more
wiley +2 more sources
4,4′-(o-Phenylenedioxydimethylene)dipyridinium dinitrate
Acta Crystallographica Section E, 2009 The cation of the salt, C18H18N2O22+·2NO3−, lies about a twofold rotation axis. The pyridinium ring is almost coplanar with the phenylene ring [dihedral angle between rings = 5.69 (9)°].
Ping Zou +4 more
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title hydrated salt, C13H10Cl2N3O+·Cl−·3H2O, the organic cation exhibits a dihedral angle of 8.26 (14)° between the mean planes of the pyridinium and benzene rings, and dihedral angles of 8.70 (15) and 15.93 (5)° between the mean planes of the ...
J. Josephine Novina +3 more
doaj +1 more source
Pyridinium-catalyzed decarboxylative borylation of benzoyl peroxides
Green Synthesis and Catalysis, 2021 A pyridinium salt catalyzed radical borylation of benzoyl peroxides is reported herein. A range of benzoyl peroxides having different electronic properties were well compatible in this borylation reaction, delivering various arylboronates in good yields ...
Shuxian Zhu +4 more
doaj +1 more source
Tandem dinucleophilic cyclization of cyclohexane-1,3-diones with pyridinium salts
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
doaj +1 more source