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4,4′-Bipyridine (abbreviated to 4,4′-bipy or 4,4′-bpy) is an organic compound with the formula (C 5 H 4 N) 2. It is one of several isomers of bipyridine. It is a colorless solid that is soluble in organic solvents. is mainly used as a precursor to N,N′-dimethyl-4,4′-bipyridinium [(C 5 H 4 NCH 3) 2] 2+, known as paraquat.
The 3,4′-bipyridine derivatives inamrinone and milrinone are used occasionally for short term treatment of congestive heart failure. They inhibit phosphodiesterase and thus increasing cAMP , exerting positive inotropy and causing vasodilation.
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They are red or orange THF-soluble solids. The bipyridine reagent is produced by reduction of 4,4'-bipyridine in the presence of trimethylsilyl chloride (Me = CH 3): [2] NC 5 H 4 C 5 H 4 N + 2 Li + 2 Me 3 SiCl → Me 3 SiNC 5 H 4 C 5 H 4 NSiMe 3 + 2 LiCl. A typical reduction reaction is the conversion of tungsten hexachloride to the ...
Thermogravimetric analysis or thermal gravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes. . This measurement provides information about physical phenomena, such as phase transitions, absorption, adsorption and desorption; as well as chemical phenomena including chemisorptions, thermal decomposition, and ...
The molecular formula C 10 H 8 N 2 (molar mass: 156.18 g/mol, exact mass: 156.0687 u) may refer to: Bipyridines. 2,2'-Bipyridine; 4,4'-Bipyridine
The compound gives a light red solution in water, [2] and crystallizes as the glistening bluish-black (but non-conducting) dihydrate C 6 O 2 (OH) 4 ·2H 2 O. [2] [3] The compound can be synthesized from glyoxal [4] or from myo-inositol, a natural compound widely present in plants. [5] THBQ forms an adduct with 4,4′-bipyridine in a 2:3 ratio. [6]
4-Pyridone exists a keto-enol tautomerism with its enol tautomer 4-hydroxypyridine. In solution, the keto tautomer is favoured, [4] and the enol tautomer only becomes important in very dilute solutions or solutions of non-polar solvents. However, the enol tautomer is dominant in the gas phase. [5]