A series of substituted chromones were synthesized and characterized by spectral data. Some of the synthesized compounds were tested for in‐vitro antibacterial, antifungal and antioxidant activity. Two compounds have shown very good antioxidant activity and some of the chromone derivatives have exhibited moderate antibacterial and antifungal activity.
Moreover, derivatives (IVb) and (VIc) show very good antioxidant effects. -(RODE, M.; CUPTA, R. C.; KARALE, B. K.; RINDHE*, S. S.; J. Heterocycl. Chem. 45 (2008) 6, 1597-1602; Dep. Chem., New Arts Commerce Sci. Coll., Ahmednagar 414 001, India; Eng.) -R. Staver 15-138
The reaction of indoline with a substituted benzoyl chloride in the presence of K 2 CO 3 in THF gave compound 4. Compound 4 was subjected to chlorosulphonation to obtain compound 5. Condensation of aromatic amines with compound 5 led to the synthesis of indoline derivatives 6(a-f). Similarly, 5-nitroindoline was treated with a substituted benzoyl chloride to obtain the nitro compound 9, which was reduced using stannous chloride and reacted further with aromatic sulphonyl chloride to obtain the indoline derivatives 11(a-e). These compounds were tested for antibacterial, anti-tuberculosis and antifungal activity. Some of them showed very good activity against some gram-positive and gram negative bacteria, fungal strains and also Mycobacterium tuberculosis. All of the synthesized compounds were subjected to antioxidant activity testing using the in vitro DPPH assay and most of them showed very good activity.
Nowadays, peoples are more attracted towards the Electric Vehicles (EVs) due to environmental pollution, its decreasing resources and also increasing prices of fossil fuel. But there should be new load occur on power system. The new challenges caused on power system i.e., frequency control and stability of power system. To avoid these problems, batteries are used in EVs to stored the energy. The PV panels are connected to batteries to charge. EVs batteries are stored in Grid when necessary. It is known as Vehicle to Grid (V2G) concept. This concept is used to improve State of Charge (SOC) of batteries.
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