Reaction of amines with ortho chloro carbonyl compounds and its derivatives: A novel one pot synthesis of pyrozolo, benzodiazepino, cyclodecano and cyclotridecano derivatives of naphthalene at room temperature.

2112-2114Reaction of 1-chloro-6-methoxy-3,4-dihydro naphthalene-2-carbaldehyde 1 with hydrazine hydrate 7a, phenylhydrazine 7b, 2,4-dinitro phenylhydrazine 7c, ethylene diamine 8, ortho phenylene diamine 9, ethylene triamine 10 and ethylene tetrarnine 11 produce pyrozolo 12(a-c), benzodiazepino 13-14,cyclodecano 15 and cyclotridecano 16 derivatives of naphthalene. The behaviour of the above diamines 7(a-c) and 9 compounds with malononitrile and nitrone derivatives, which were derived from 1, are also discussed

Particle size mediated investigation of various physicochemical properties of kaolinite clay for fabricating the separator layer of green capacitors

This article reports size fractionation of a natural clay namely kaolinite for fabricating cost-effective green separator material for energy storage devices. kaolinite is reportedly biocompatible and abundantly available in nature, which makes it cost-effective. Such a low-cost clay is found to be in the nano regime when treated in a ball-milling machine for a prolonged duration (12 h). The enhancement in porosity and surface area have also been observed in the treated nano-clay, which subsequently renders it's dielectric constant (similar to 5000 at 40 Hz frequency) remarkably. Henceforth, it can be argued that crystallinity and aspect ratio (S/V) has a prominent impact on the electrical properties of this natural clay. Cyclic voltammetry and galvanostatic charging-discharging measurements depict high specific capacitance (similar to 185 F g(-1)) in the nano-clay sample without the presence of any redox peak making it a good separator material. The slow electrical discharge rate also approves the storage property of this clay sample quite effectively. Abundance, augmented permittivity with a relatively low tangent loss, high specific capacitance and significant resistivity through the material make this nano-clay material a promising `green' dielectric separator for energy storage applications