N. K. Swamy

Publications27
h-index11
Citations333
Highly Influential Citations1
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Groundwater quality of a coastal basin in Visakhapatnam : A case study
M. V. P. Colony in Vishakhapatnam draws water for domestic needs from a shallow groundwater. The chemical quality of this water has been analysed and interpreted, inferring domestic waste water,… Expand
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Copper-mediated cyclization-halogenation and cyclization-cyanation reactions of beta-hydroxyalkynes and o-alkynylphenols and anilines.
The CuX (X = I, Br, Cl, CN)-mediated cyclization-halogenation and cyclization-cyanation reactions of beta-hydroxyalkynes and o-alkynylphenol and -aniline derivatives give rise to 3-halo- and… Expand
  • 56
A remarkable accelerating effect of Ag-salt on intramolecular cyclization of o-(1-alkynyl)benzenesulfonamides.
Herein, we report transition metal-catalyzed intramolecular cyclization of o-(1-alkynyl)benzenesulfonamides to afford 3-substituted benzothiazines regioselectively via a C-N bond forming reaction and… Expand
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A rapid and direct access to symmetrical/unsymmetrical 3,4-diarylmaleimides and pyrrolin-2-ones
Abstract 1,8-Diazabicyclo[5.4.0]undec-7ene (DBU) facilitated the oxidative cyclization of phenacyl amide in the presence of atmospheric oxygen under environmentally friendly conditions. The reaction… Expand
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Tandem versus single C–C bond forming reaction under palladium–copper catalysis: regioselective synthesis of α-pyrones fused with thiophene
Abstract We herein report a highly convenient protocol for rapid construction of α-pyrone fused with thiophene. This includes one-pot and regioselective synthesis of 4,5-disubstituted and… Expand
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Metal-catalyzed cycloisomerization reactions of cis-4-hydroxy-5-alkynylpyrrolidinones and cis-5-hydroxy-6-alkynylpiperidinones: synthesis of furo[3,2-b]pyrroles and furo[3,2-b]pyridines.
Furo[3,2-b]pyrroles and furo[3,2-b]pyridines can be conveniently prepared in good yields from the cycloisomerization reactions of cis-4-hydroxy-5-alkynylpyrrolidinones and… Expand
  • 27
Palladium-mediated synthesis of 5-substituted 4-alkynylthieno[2,3-c]pyran-7-ones☆
Abstract We describe here, the first palladium-mediated tandem C–C bond forming reaction between 3-iodothiophene-2-carboxylic acid and terminal alkynes to afford the unexpected 5-substituted… Expand
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Pd/C-mediated coupling of aryl halides with terminal alkynes in water
Abstract 2-Aminoethanol facilitated the alkynylation of aryl halides (Sonogashira reaction) under palladium/charcoal–copper catalysis in water affording a mild and practical method for the synthesis… Expand
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Pd/C-mediated depropargylation of propargyl ethers/amines in water
Abstract Propargyl ethers and amines are effectively depropargylated to the parent alcohols or amines via a C−O/C−N bond cleavage catalyzed by 10% Pd/C in water. This simple, facile, and inexpensive… Expand
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A new synthesis of 2-substituted pyridines via aluminum chloride induced heteroarylation of arenes and heteroarenes.
[reaction: see text] We herein report a new synthesis of 2-(hetero)aryl-substituted pyridines via heteroarylation of arenes/heteroarenes through AlCl(3)-induced C-C bond-forming reactions.… Expand
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