A straightforward one-pot route for the synthesis of a new 4-phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one is reported form direct hydrazinolysis triketo ester and hydrazine hydrate in ethanol. 4-Phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one was subjected to aza-Michael addition N-alkylation on reaction with set alkylating agents presence K2CO3. Hydrazinolysis hydrazide conversion thiosemicarbazi...

The title compound, C19H20N4O3S, was synthesized by refluxing equimolar amounts of 1-phenyl-3-methyl-4-propionylpyrazol-5-one and benzene-sulfonyl hydrazide in ethanol. The compound crystallizes in the keto form and the carbonyl O atom forms an intra-molecular N-H⋯O hydrogen bond with the neighbouring NH group. There is also C-H⋯O short contact involving the neighbouring phenyl ring. Probably a...

The absorption and fluorescence spectra of phenylcoumarin and cyanophenylbenzocoumarin-3carboxylates 6a-f and 9a-e have been investigated in chloroform, acetonitrile and ethanol. The substituting groups with varying electron donating ability such as N,N-diethyl amine and morpholine at 7-position, in phenylcoumarin-3-carboxylate 6a-f exhibits fluorescence at a longer wavelength i.e. 420-460 nm i...

the equilibrium constant of adduct formation between some triorganotin chloride of the type r3sncl (r=c6h5, p-ch3c6h4, n-ch3)ch2)3, c6h5-ch2 and lewis bases cl¯, br¯, and i¯, were measured in 50% v/v ethanol-water solvent spectrophotometrically. the average equilibrium constant values for the systems studied shows the following acceptor trend of tin(iv) in the triorganotin chlorides: p-tolyl > ...

The orientation of facial (fac) tris-cyclometalated iridium complexes in doped films prepared by vacuum deposition is investigated altering the physical shape and electronic asymmetry molecular structure. Angle-dependent photoluminescence spectroscopy Fourier-plane imaging microscopy show that roughly spherical fac-tris(2-phenylpyridyl)iridium (Ir(ppy)3) isotropic, whereas are oblate spheroids,...

Complex formation of poorly water soluble organic compounds with cyclodextrin (CD) is quite difficult in an aqueous cyclodextrin system. Formation of the inclusion complex of d-limonene, phenyl ethanol, acetophenone, or menthol was investigated in a slurry form of α-, β-, or γ-CD in organic solvents or alcohol under anhydrous conditions. Ethanol and methanol were found to be good solvents for t...