Search Results - "Asokan, C.V"

Vilsmeier–Haack reactions of carbonyl compounds: synthesis of substituted pyrones and pyridines by Thomas, Ajith Dain, Josemin, Asokan, C.V

“…Vilsmeier–Haack reaction of substituted phenylacetones leads to the formation of conjugated iminium salts which on aqueous basic work up afford…”
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Sterically encumbered triarylcorroles from aryldipyrromethanes and aromatic aldehydes by Asokan, C.V, Smeets, S, Dehaen, W

“…A two-step synthesis of corroles from dipyrromethanes and aromatic aldehydes has been achieved. Acid-catalyzed [2+2] condensation of…”
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Synthesis of pyrimidine-5-carbaldehydes from α-formylaroylketene dithioacetals by Mathews, Annie, Asokan, C.V.

“…A facile one pot synthetic path for the preparation of pyrimidine-5-carbaldehydes from α-formylaroylketene dithioacetals is described. Amidines were allowed to…”
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A facile method for the synthesis of substituted 2-ylidene-1,3-oxathioles from acetophenones by Samuel, R., Asokan, C.V., Suma, S., Chandran, P., Retnamma, S., Anabha, E.R.

“…Compounds incorporating 1,3-oxathiole moieties in their frameworks are biologically active. Active methylene ketones can be easily converted to the…”
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An efficient synthesis of highly substituted pyrroles from β-oxodithiocarboxylates by Mathew, Paulson, Asokan, C.V.

“…α-Oxoketene- N, S-acetals, prepared by the reaction of alkyl glycinate hydrochlorides with β-oxodithiocarboxylates followed by alkylation, underwent…”
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Alkylation of aryl 3-oxopropanedithioate and 3-amino-1-aryl-3-thioxo-1-propanones as an effective tool for the construction of differently substituted thiophenes and annulated thiophenes by Samuel, Reichel, Chandran, Prakash, Retnamma, S., Sasikala, K.A., Sreedevi, N.K., Anabha, E.R., Asokan, C.V.

“…The alkylation of aryl 3-oxopropanedithioate with α-haloketones under different reaction conditions afforded substituted…”
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Cyclization of functionalized ketene- N, S-acetals to substituted pyrroles: applications in the synthesis of marine pyrrole alkaloids by Mathew, Paulson, Asokan, C.V.

“…[Display omitted] α-Oxoketene- N, S-acetals, prepared by the reaction of alkyl glycinates with β-oxodithiocarboxylates followed by alkylation, underwent…”
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Vilsmeier–Haack reactions of α-hydroxyketenedithioacetals: a facile synthesis of substituted pyridines by Thomas, Ajith Dain, Asokan, C.V

“…The reaction of α-hydroxyketenedithioacetals, generated by the 1,2-addition of methyl Grignard reagent to α-oxoketenedithioacetals, with the Vilsmeier reagent…”
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Synthesis of 2,3,5-trisubstituted furans from α-formylaroylketene dithioacetals by Sasikala, K.A., Kalesh, K.A., Anabha, E.R., Pillai, P. Madhavan, Asokan, C.V., Devaky, K.S.

“…A new strategy for the synthesis of 2,3,5-trisbustituted furans from α-formylketene dithioacetals is described. The protocol involves a facile conversion of…”
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A facile method for the synthesis of nicotinonitriles from ketones via a one-pot chloromethyleneiminium salt mediated three-component reaction by Asokan, C.V., Anabha, E.R., Thomas, Ajith Dain, Jose, Ann Maria, Lethesh, K.C., Prasanth, M., Krishanraj, K.U.

“…Simple enolizable ketones such as acetophenones and benzalacetones were treated with malononitrile under Vilsmeier–Haack reaction conditions to afford…”
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Simple methods to synthesize 2-pyridones: reactions of 2-aroyl-3,3-bis(alkylsulfanyl)acrylaldehydes and cyanoacetamide by Mathews, Annie, Anabha, E.R., Sasikala, K.A., Lathesh, K.C., Krishnaraj, K.U., Sreedevi, K.N., Prasanth, M., Devaky, K.S., Asokan, C.V.

“…5-Aroyl-6-(methylsulfanyl)-2-oxo-1,2-dihydro-3-pyridinecarbonitriles and 5-aroyl-4-(methylsulfanyl)-2-oxo-1,2-dihydro-3-pyridinecarbonitriles are synthesized…”
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Ultrasonic investigation of molecular interaction in binary mixtures of nitriles with methanol/toluene by Abraham, Roshan, Abdulkhadar, M., Asokan, C.V.

“…Ultrasonic velocity, density, and viscosity have been measured in the binary mixtures of nitriles with (CH3OH / C6H5CH3) at different temperatures. Excess…”
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Reactions of 1-aryl-2-propanones with chloromethyleneiminium salt by Josemin, Nirmala, K.N., Asokan, C.V.

“…A synthesis of 3-formyl-4-pyrones by Vilsmeier-Haack reaction of substituted benzyl methyl ketones has been reported. The reaction of benzyl ethyl ketone with…”
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