Výsledky vyhledávání - "Sanjeeva K, Arupula"

Chemoselective cyclization of N-sulfonyl ketimines with ethenesulfonyl fluorides: access to trans-cyclopropanes and fused-dihydropyrroles

Autor: Soumitra Guin, Sampak Samanta, Shaikh M. Mobin, Santosh K. Gudimella, Sanjeeva K. Arupula

Publikováno v: Organic & Biomolecular Chemistry. 17:3451-3461

An interesting stereo- and chemoselective cyclization reaction of several N-sulfonyl ketimines as C/N-donors with a variety of α,β-unsaturated sulfonyl fluorides promoted by DBU is reported. This substrate-dependent selective C-C vs. C-N bond cycli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d43a6479de88304847537b76883806cf
https://doi.org/10.1039/c9ob00433e

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Lewis Base-Switched [3 + 3] and [4 + 2] Annulation Reactions of δ-Acetoxy Allenoates with Cyclic

Autor: Sanjeeva K, Arupula, Asif Ali, Qureshi, K C Kumara, Swamy

Publikováno v: The Journal of organic chemistry. 85(6)

Under metal-free conditions, δ-acetoxy allenoates react with cyclic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::18079ae3c0743f042fbe7aa5f5460f40
https://pubmed.ncbi.nlm.nih.gov/32043357

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Lewis-Base-Catalyzed Domino Reaction of Morita-Baylis-Hillman Carbonates of Isatins with Enolizable Cyclic Carbonyl Compounds: Stereoselective Access to Spirooxindole-Pyrans

Autor: Sampak Samanta, Anubha Yadav, Shaikh M. Mobin, Joyanta Banerjee, Sanjeeva K. Arupula

Publikováno v: Asian Journal of Organic Chemistry. 7:1595-1599

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::756639b38c879c2524d79b9a90256e37
https://doi.org/10.1002/ajoc.201800240

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A Facile and Efficient Synthesis of Oxindole Scaffolds through Linear Regioselective Reductive Coupling between Vinyl Sulfones and Isatins/Isatinimines

Autor: Harshadas M. Meshram, V. Raju, Santosh K. Gudimella, Sanjeeva K. Arupula, Jagadeesh B. Nanubollu, K. Ramakrishna

Publikováno v: ChemistrySelect. 2:5105-5109

Zn/CeCl3.7H2O mediated facile and an efficient synthesis of oxindoles motifs via linear regioselective reductive coupling between isatin/isatinimine derivatives and vinyl sulfones at room temperature has been described. This synthetic protocol is bas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::736402aa6c8ec135e5ed36661da0352d
https://doi.org/10.1002/slct.201700738

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Stereoselective Synthesis of 3,3-Disubstituted Oxindoles and Spirooxindoles via Allylic Alkylation of Morita-Baylis-Hillman Carbonates of Isatins with Cyclic Sulfamidate Imines Catalyzed by DABCO

Autor: Shaikh M. Mobin, Sampak Samanta, Anubha Yadav, Soumitra Guin, Sanjeeva K. Arupula

Publikováno v: The Journal of organic chemistry. 83(5)

An efficient, organocatalytic, and ecofriendly method has been developed for the quick construction of a wide array of 3,3-disubstituted oxindoles in good to excellent yields and diastereomeric ratio (up to ≤96:4) with excellent functional group to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::294bccd858af98363cf7fe3a8c5c27fb
https://pubmed.ncbi.nlm.nih.gov/29412661

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