264 Substituted 1,3-indandione derivatives have shown a large applicability during the last three decades in the fields of medicine [1-5], biology [6,7] and agriculture [8]. There are many references related to the biological activity of some 2-substituted indan-1,3-dione derivatives such as their good anticoagulant [9], anti-inflammatory [10], analgezic [11], antibacterial [12] or bronchiadila...

In the condensation of the 4and 5-nitro-substituted 2-acetyl-1,3-indandione with heteroaryl aldehydes in the presence of alkaline or acidic catalysts, the corresponding cinnamoyl derivatives are obtained that possess anticoagulant activity, compared with that of 2-acetyl-1,3-indandione. It has been proven that some of the sodium salts of the cinnamoyl-indandione possess anticoagulant activity. ...

Two new compounds isobenzofuranone A (1) and indandione B (2), together with eleven known compounds (3-13) were isolated from liquid cultures of an endophytic fungus Alternaria sp., which was obtained from the medicinal plant Morinda officinalis. Among them, the indandione (2) showed a rarely occurring indanone skeleton in natural products. Their structures were elucidated mainly on the basis o...

Reactions of 2-X-2-(Y-phenyl)-l,3-indandiones (X = C1, Br; Y = H, p-N02, /?-CH30, m-CH30) with anions of acetylacetone, ethyl malonate nitromethane, and 2-nitropropane were carried out. It was found that the starting indandione was converted during the reaction into the anion of 2-(Y-phenyl)-l,3-indandione (/) and bis-2-(Y-phenyl)-l,3-indandione (II). The ratio of the products / and II was depe...

The preparation, structure and spectral characteristics o f intensely colored salts of 2-hydroxyim ino-l,3-indandione with am m onia and amines are described. The crystallization o f the salts takes place with a high yield. All the salts fluoresce in DM SO. M N D O calculations show that the form ation o f an anion from 2-hydroxyim ino-l,3-indandione is associated with substantial alterations i...

The title mol-ecule, C16H9BrO3, deviates slightly from planarity. The benzene ring makes a dihedral angle of 1.02 (9)° with the plane defined by the five-membered ring of the indandione moiety. The latter exhibits a minute twist indicated by the dihedral angle of 0.47 (9)° between the planes of the five- and six-membered rings. An intra-molecular C-H⋯O hydrogen bond between the attached benzene...

Conductive polymer poly-3-hexylthiophene (P3HT) needles were self-assembled using a second component (indandione derivatives) as a linking agent to enhance their long range alignment. The morphologies of the hybrid organic/organic materials were characterized by transmission electron microscopy (TEM). Both linear and branched structures could be produced, with the degree of branching depending ...

A ttem pted M annich reaction with the title com pound 1 using m orpholine and formalin led to 2 or 4 according to the reaction conditions. W hereas, on using prim ary amines the diindeno [l,2-b:2 ',l'-e]pyridine (9 -1 1 ) were obtained, in addition to 2-methylene1,3-indandione (6 ), in case o f 10 and 11. However, the M annich bases 1 3 -1 5 were form ed on treating 2-benzylidene-1,3-indandion...

The electron impact-induced fragmentation of 2,2-dimethyland 2-ethyI-l,findandione, 1 and 2, and their isomers, 3-isopropylideneand 3-propylidenephthalide, 3 and 4, respectively, was studied in detail by mass-analysed ion kinetic energy (MIKE) and collision-induced dissociation (CID-MIKE) spectrometry, including 'H and I3Clabelled analogues of 1 and 2. In all regimes of internal energy, the mol...

Condensed phase standard (p degrees = 0.1 MPa) molar enthalpies of formation for 1-indanone, 2-indanone, and 1,3-indandione were derived from the standard molar enthalpies of combustion, in oxygen, at T = 298.15 K, measured by static bomb combustion calorimetry. The standard molar enthalpies of sublimation for 1-indanone and 2-indanone, at T = 298.15 K, were measured both by correlation-gas chr...