Polysubstituted quinolines were synthesized from the 2aminobenzophenone, ethylacetoacetate or ketones in the presence of metal hydrogen sulfates [M(HSO 4 ) n ] in good to high yields at 70 ˚C under solvent-free conditions.Inorganic solid acidic salts such metal hydrogen sulfates play a prominent role in organic synthesis under heterogeneous conditions. 1-3 Along this line, using metal hydrogen sulfates especially; Al(HSO 4 ) 3 , 4,5 Mg(HSO 4 ) 2 , 6,7 Ca(HSO 4 ) 2 , 8,9 which are low in toxicity, highly stable towards humidity, recyclable and air stable have found more attention. The importance of these solid acid catalysts is growing because of their safe and eco-friendly nature as attention is directed toward the development of clean and green technologies for important organic molecules to promote environmental safety.Quinolines and their derivatives are very important compounds because of their wide occurrence in natural products 10 and biologically active compounds. 11,12 A large variety of quinolines have displayed interesting physiological activities and found attractive applications as pharmaceuticals and agrochemicals, as well as being general synthetic building blocks. 10 They show anti-malarial, antibacterial, anti-asthmatic, anti-hypertensive, antiinflammatory, anti-platelet and tyrokinase PDGF-RTK inhibiting properties. [13][14][15][16][17] Many synthetic methods such as Skraup, Döbner-von Miller, Friedländer, Combes reactions have been developed for the preparation of quinolines, 18-20 but due to their great importance, the development of novel synthetic approaches remains as active research area. 21-23 Amongst various methodologies reported for the preparation of quinolines, Friedländer annulation's is one of the simplest and most straightforward protocols. Friedländer synthesis involves a condensation followed by a cyclodehydration between an aromatic 2-aminoaldehyde or ketone and an aldehyde or ketone with a αmethylene functionality. Friedländer reaction can occur under base, 24 Brønsted acids, 25 Lewis acid, [26][27][28][29] inorganic salt, 30 iodine, 31 solid acid, 32 palladium, 33 nickel chloride, 34 potassium dodecatangestocobaltate

The notion of hull-kernel topology on a collection of prime filters in a residuated lattice is introduced and investigated. It is observed that any collection of prime filters is a T0 topological space under the hull-kernel and the dual hull-kernel topologies. It is proved that any collection of prime filters is a T1 space if and only if it is an antichain, and it is a Hausdorff space if and only if it satisfies a certain condition. Some characterizations in which maximal filters forms a Hausdorff space are given. At the end, it is focused on the space of minimal prim filters, and it is shown that this space is a totally disconnected Hausdorff space. This paper is closed by a discussion abut the various forms of compactness and connectedness of this space.

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In this paper, a combination of algebraic and topological methods is applied to obtain new and structural results on mp and purified residuated lattices. It is demonstrated that mp-residuated lattices strongly tied up with the dual hull-kernel topology. Especially, it is shown that a residuated lattice is mp if and only if its minimal prime spectrum, equipped with the dual hull-kernel topology, is Hausdorff if and only if its prime spectrum, equipped with the dual hull-kernel topology, is normal. For a residuated lattice A and a subalgebra S the notion of disjunctive S-regular and S-mp residuated lattices introduced and investigated. It is shown that a residuated lattice A is purified if and only if it is (A)-mp if and only if it is disjunctive (A)-regular, where (A) is the set of complemented elements of A. Some topological characterizations for purified residuated lattices are extracted and proved that a residuated lattice A is purified if and only if its minimal prime spectrum, equipped with the dual hull-kernel topology, is a profinite space. 1

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