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Journal Article
A. K. Mahida, Kale, S. B., and Das, U., “Synthesis route to pyrrolones from -cyano ,-unsaturated ketones and -isocyano esters by oxidative dearomatization of 2-aminofuran intermediates”, European Journal of Organic Chemistry, no. 43, pp. 6427-6433, 2017.
S. B. Kale, Kumar, M., Shinde, D. R., Krishna, G. Rama, and Das, U., “Synthesis of N-functionalized 2,3-disubstituted benzofurans/naphthofurans from para-quinone methides and isocyanides via the [4+1] annulation pathway”, Organic Chemistry Frontiers, vol. 10, no. 15, pp. 3746-3751, 2023.
S. B. Kale, Jori, P. K., and Das, U., “Rongalite as a sulfone source: sulfonylation of para-quinone methides and alkyl/allyl halides”, Chemistry-an Asian Journal, vol. 17, no. 16, p. e202200408, 2022.
P. Kumar, Rai, A., Kumar, M., Krishna, G. Rama, and Das, U., “Radical cascade cyclization of unactivated alkene-tethered indoles with aryldiazonium salt and sodium metabisulfite to access Azo- and Sulfonylated-2,3-Dihyro-1H-pyrrolo[1,2-a]indoles”, Journal of Organic Chemistry, vol. 88, no. 13, pp. 9123-9129, 2023.
Y. - R. Chen, Das, U., Liu, M. - H., and Lin, W., “Organocatalytic enantioselective direct vinylogous michael addition of alpha,beta-unsaturated gamma-butyrolactam to beta-acyl acrylates and 1,2-diacylethylenes”, Journal of Organic Chemistry, vol. 80, no. 3, pp. 1985-1992, 2015.
S. K. Deepake, Lanjewar, A. B., Thatikonda, T., Gonnade, R. G., and Das, U., “Organocatalytic asymmetric cascade reaction of gamma-substituted deconjugated butenolides with o-formyl-beta-nitrostyrene”, ChemistrySelect, vol. 3, no. 28, pp. 8189-8192, 2018.
T. Thatikonda, Deepake, S. K., and Das, U., “Alpha-Angelica lactone in a new role: facile access to N-Aryl tetrahydroisoquinolinones and isoindolinones via organocatalytic alpha-CH2 oxygenation”, Organic Letters, vol. 21, no. 8, pp. 2532-2535, 2019.
S. K. Deepake, Kumar, M., Kumar, P., and Das, U., “Alpha-angelica lactone catalyzed oxidation of pyrrolidines to lactams”, European Journal of Organic Chemistry, vol. 2022, no. 31, p. e202200712, 2022.
T. Thatikonda, Deepake, S. K., Kumar, P., and Das, U., “Alpha-Angelica lactone catalyzed oxidation of benzylic sp(3) C-H bonds of isochromans and phthalans”, Organic & Biomolecular Chemistry, vol. 18, no. 21, pp. 4046-4050, 2020.
P. Kumar, Kale, S. B., Gonnade, R. G., and Das, U., “Acid mediated sulfonylation of para-quinone methides with tosylmethyl isocyanides for the synthesis of diarylmethyl sulfones”, ChemistrySelect, vol. 6, no. 28, pp. 7158-7161, 2021.
S. B. Kale, Jori, P. K., Thatikonda, T., Gonnade, R. G., and Das, U., “1,6-Conjugate-addition-induced [2+1] annulation of para-quinone methides and pyrazolones: synthesis of bis-spiro compounds with contiguous quaternary spiro-centers”, Organic Letters, vol. 21, no. 19, pp. 7736-7740, 2019.