Search Results - "Dantale, Shubhada"

Formation of 2-halomethylene-4-cyclopentene-1,3-diones and/or 2-halo-1,4-benzoquinones via ring-expansion of 4-ethynyl-4-hydroxy-2,3-substituted-2-cyclobuten-1-ones. Total synthesis of methyl linderone by Yin, Hong, Dantale, Shubhada W., Akhmedov, Novruz G., Söderberg, Björn C.G.

“…An in-depth study of the reactions of 4-(ethynyl)-4-hydroxy-2,3-substituted-2-cyclobuten-1-ones with N-bromo- or N-iodosuccinimide, affording in most cases…”
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A palladium-catalyzed synthesis of isatins (1 H-Indole-2,3-diones) from 1-(2-haloethynyl)-2-nitrobenzenes by Söderberg, Björn C.G., Gorugantula, Sobha P., Howerton, Chet R., Petersen, Jeffrey L., Dantale, Shubhada W.

“…An inherently regiospecific synthesis of isatins (1 H-indole-2,3-diones) starting from 1-halo-2-nitrobenzenes is described. The isatins are formed by an…”
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Palladium-catalyzed reductive N-heterocyclization of alkenyl-substituted nitroarenes as a viable method for the preparation of bicyclic pyrrolo-fused heteroaromatic compounds by Gorugantula, Sobha P., Carrero-Martínez, Grissell M., Dantale, Shubhada W., Söderberg, Björn C.G.

“…Palladium-catalyzed, carbon monoxide-mediated reductive N-heterocyclization of nitro-heteroaromatic compounds having an alkene adjacent to the nitro-group…”
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A novel palladium-catalyzed synthesis of β-carbolines: application in total synthesis of naturally occurring alkaloids by Dantale, Shubhada W, Söderberg, Björn C.G

“…Two naturally occurring β-carbolines, 6-methoxy-2-methyl-1,2,3,4-tetrahydro-β-carboline and bauerine A, have been prepared using a Stille-type coupling,…”
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First Use of Axially Chiral Thioamides for the Stereocontrol of C−C Bond Formation by Dantale, Shubhada, Reboul, Vincent, Metzner, Patrick, Philouze, Christian

“…Several N‐aryl‐substituted thioamides with an axis of chirality along the N−C(aryl) bond were prepared in good to excellent yields. NMR spectra revealed…”
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Interconversion of oxathiolanes and carbonyls under essentially identical conditions by Ravindranathan, T., Chavan, Subhash P., Dantale, Shubhada W.

“…A catalytic, non-aqueous protocol for the interconversion of oxathiolanes and carbonyl compounds at room temperature is described. A catalytic, non-aqueous…”
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Erratum to ‘Formation of 2-halomethylene-4-cyclopentene-1,3-diones and/or 2-halo-1,4-benzoquinones via ring-expansion of 4-ethynyl-4-hydroxy-2,3-substituted-2-cyclobuten-1-ones. Total synthesis of methyl linderone’ [Tetrahedron 69 (2013) 9284–9293] by Yin, Hong, Dantale, Shubhada W., Akhmedov, Novruz G., Söderberg, Björn C.G.

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Facile deprotection of allyl esters mediated by solid superacid (sulphated SnO2) by Chavan, Subhash P., Zubaidha, P.K., Dantale, Shubhada W., Keshavaraja, A., Ramaswamy, A.V., Ravindranathan, T.

“…Facile deprotection of allyl esters in the presence of sulphated SnO2 is described. Facile deprotection of allyl esters in the presence of sulphated SnO2 is…”
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Use of solid superacid (sulphated SnO2) as efficient catalyst in tacile transesterification of ketoesters by Chavan, Subhash P., Zubaidha, P.K., Dantale, Shubhada W., Keshavaraja, A., Ramaswamy, A.V., Ravindranathan, T.

“…Facile one to one transesterification of ketoesters catalysed by solid superacid (sulphated SnO2) is described. Facile one to one transesterification of…”
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MgBr 2 ‐Mediated Ionic Diels–Alder Reaction of Acetals of α,β‐Unsaturated Aldehydes and Ketones with 1,3‐Dienes by Chavan, Subhash P., Ethiraj, Krishna S., Dantale, Shubhada W.

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MgBr2-Mediated Ionic Diels-Alder Reaction of Acetals of α,β-Unsaturated Aldehydes and Ketones with 1,3-Dienes by Chavan, Subhash P., Ethiraj, Krishna S., Dantale, Shubhada W.

“…A facile, mild, and efficient methodology for the ionic Diels-Alder reaction of acetals of α,β-unsaturated ketones and aldehydes as dienophiles with various…”
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TRANSESTERIFICATION OF KETOESTERS USING AMBERLYST-15 by Chavan, Subhash P., Subbarao, Y. Tripura, Dantale, Shubhada W., Sivappa, R.

“…A facile one-to-one transesterification of ketoesters by Amberlyst-15 is described…”
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An Efficient Oxidation of 1,4-Dihydropyridines Using Aqueous tert.-Butylhydroperoxide by Chavan, Subhash P., Dantale, Shubhada W., Kalkote, Uttam R., Jyothirmai, V. S., Kharul, Rajendra K.

“…Aromatization of 4-substituted 1,4-dihydro-2,6-dimethyl-3,5-pyridine dicarboxylate using aqueous tert.-butylhydroperoxide in 74-87% yield has been achieved…”
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An efficient synthesis of α-Cuparenone by Chavan, Subhash P., Ravindranathan, T., Patil, Sachindra S., Dhondge, Vijay D., Dantale, Shubhada W.

“…Synthesis of α-Cuparenone is described. The key step involved arephotorearrangement of α-halo arylketone (4) to 1-methyl-1-(p-tolyl)acetic acid (5) and…”
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