2,2 prime :4,4 double prime :4 prime ,4 prime double prime -quarterpyridyl: A building block for the preparation of novel redox reagents. 1. Preparation and quaternization
Journal Article
·
· Journal of Organic Chemistry; (United States)
- City Univ. of New York, Flushing (United States)
An efficient preparation of 2,2{prime}:4,4{double prime}:4{prime},4{prime}{double prime}-quaterpyridyl (qpy) from 4,4{prime}-bipyridine is described, using palladium on charcoal. Conditions are described for the selective methylation of the nitrogen atoms present. This has allowed the preparation of mono- and dimethylquaternary salts that retain an {alpha}-diimine site for complexation to a metal. These quaternary salts can be used to prepare complexes in which metal ions are coordinated to viologen-type ligands. Electrochemical and spectroscopic measurements of the diquaternary salt derived from qpy suggest that it behaves as two separate or weakly interacting monoquat moieties.
- OSTI ID:
- 5915922
- Journal Information:
- Journal of Organic Chemistry; (United States), Journal Name: Journal of Organic Chemistry; (United States) Vol. 55:7; ISSN JOCEA; ISSN 0022-3263
- Country of Publication:
- United States
- Language:
- English
Similar Records
2,2[prime]:4,4[double prime]:4[prime],4[prime][double prime]-quaterpyridyl: A building block for the preparation of novel redox reagents. 2. Bis(2,2[prime]-bipyridine)ruthenium(II) complexes
Photosubstitution in tris chelate complexes of ruthenium(II) containing the ligands 2,2 prime -bipyrazine, 2,2 prime -bipyrimidine, 2,2 prime -bipyridine, and 4,4 prime -dimethyl-2,2 prime -bipyridine: Energy gap control
Preparation and photoelectrochemical characterization of thin SnO[sub 2] nanocrystalline semiconductor films and their sensitization with Bis(2,2[prime]-bipyridine)(2,2[prime]-bipyridine-4,4[prime]-dicarboxylic acid)ruthenium(II) complex
Journal Article
·
Tue Dec 24 23:00:00 EST 1991
· Inorganic Chemistry; (United States)
·
OSTI ID:6769558
Photosubstitution in tris chelate complexes of ruthenium(II) containing the ligands 2,2 prime -bipyrazine, 2,2 prime -bipyrimidine, 2,2 prime -bipyridine, and 4,4 prime -dimethyl-2,2 prime -bipyridine: Energy gap control
Journal Article
·
Tue Mar 21 23:00:00 EST 1989
· Inorganic Chemistry; (USA)
·
OSTI ID:5062667
Preparation and photoelectrochemical characterization of thin SnO[sub 2] nanocrystalline semiconductor films and their sensitization with Bis(2,2[prime]-bipyridine)(2,2[prime]-bipyridine-4,4[prime]-dicarboxylic acid)ruthenium(II) complex
Journal Article
·
Thu Apr 14 00:00:00 EDT 1994
· Journal of Physical Chemistry; (United States)
·
OSTI ID:7267850
Related Subjects
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORBENTS
AMINES
AMMONIUM COMPOUNDS
AZINES
BIPYRIDINES
CHARCOAL
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CONVERSION
ELECTRON TRANSFER
ELEMENTS
ENERGY CONVERSION
HETEROCYCLIC COMPOUNDS
LIGANDS
METALS
METHYLATION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PALLADIUM
PHOTOCHEMICAL REACTIONS
PLATINUM METALS
PYRIDINES
PYRIDYL RADICALS
QUATERNARY COMPOUNDS
RADICALS
SYNTHESIS
TRANSITION ELEMENTS
VOLTAMETRY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORBENTS
AMINES
AMMONIUM COMPOUNDS
AZINES
BIPYRIDINES
CHARCOAL
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CONVERSION
ELECTRON TRANSFER
ELEMENTS
ENERGY CONVERSION
HETEROCYCLIC COMPOUNDS
LIGANDS
METALS
METHYLATION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PALLADIUM
PHOTOCHEMICAL REACTIONS
PLATINUM METALS
PYRIDINES
PYRIDYL RADICALS
QUATERNARY COMPOUNDS
RADICALS
SYNTHESIS
TRANSITION ELEMENTS
VOLTAMETRY