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Journal Article
M. S. Said, Pandole, S., Suryavanshi, A., Kumar, P., and Gajbhiye, J. M., Acidic handle assemble heterogeneous carbocatalyst for facile aliphatic nucleophilic fluorination, ChemistrySelect, vol. 4, no. 36, pp. 10960-10964, 2019.
P. Kumar, Naidu, V., and Gupta, P., Application of hydrolytic kinetic resolution (HKR) in the synthesis of bioactive compounds, Tetrahedron, vol. 63, no. 13, pp. 2745-2785, 2007.
S. Rao V. Kandula and Kumar, P., Asymmetric aminohydroxylation route to cis-2,6-disubstituted piperidine-3-ol: application to the synthesis of (-)-deoxocassine, Tetrahedron, vol. 62, no. 42, pp. 9942-9948, 2006.
S. Rao V. Kandula and Kumar, P., Asymmetric aminohydroxylation route to (+)-L-733,060, Tetrahedron-Asymmetry, vol. 16, no. 21, pp. 3579-3583, 2005.
K. Show, Upadhyay, P. K., and Kumar, P., Asymmetric dihydroxylation route to (-)-bulgecinine, Tetrahedron-Asymmetry, vol. 22, no. 11, pp. 1234-1238, 2011.
R. Kumar Pandey, Upadhyay, R. Kumar, and Kumar, P., Asymmetric dihydroxylation route towards the synthesis of (R)-clorprenaline hydrochloride, Arkivoc, no. 14, pp. 10-14, 2006.
A. Harbindu, Sharma, B. M., and Kumar, P., Asymmetric routes to pentadec-1-en-4-ol: application to the syntheses of aculeatins F and epi-F, (R)- and (S)-5-hexadecanolide and a formal synthesis of solenopsin, Tetrahedron-Asymmetry, vol. 24, no. 5-6, pp. 305-314, 2013.
S. Rao V. Kandula and Kumar, P., Asymmetric synthesis of (-)-alpha-conhydrine, Tetrahedron-Asymmetry, vol. 16, no. 19, pp. 3268-3274, 2005.
P. Kumar and Bodas, M. S., Asymmetric synthesis of both the enantiomers of trans-3-hydroxypipecolic acid, Journal of Organic Chemistry, vol. 70, no. 1, pp. 360-363, 2005.
C. Singh, Jawade, K., Sharma, P., Singh, A. P., and Kumar, P., Carbon-carbon bond forming reactions: application of covalently anchored 2,4,6-triallyloxy-1,3,5-triazine (TAT) Pd(II) complex over modified surface of SBA-15 to Heck, Suzuki, Sonogashira and Hiyama cross coupling reactions, Catalysis Communications, vol. 69, pp. 11-15, 2015.
U. Nookaraju, Begari, E., Yetra, R. Reddy, and Kumar, P., CeCl3 center dot 7H(2)O-NaI promoted regioselective sulfenylation of indoles with sulfonylhydrazides, Chemistryselect, vol. 1, no. 1, pp. 81-85, 2016.
P. Kumar, Cherian, S. K., Jain, R., and Show, K., Chemoselective deprotection of N-allylic amines using DDQ, Tetrahedron Letters, vol. 55, no. 52, pp. 7172-7176, 2014.
S. Sahoo, Kumar, P., Lefebvre, F., and Halligudi, S. B., Chiral Mn(III) salen complex immobilized onto ionic liquid modified mesoporous silica for oxidative kinetic resolution of secondary alcohols, Tetrahedron Letters, vol. 49, no. 33, pp. 4865-4868, 2008.
E. Begari, Singh, C., Nookaraju, U., and Kumar, P., Clay-supported copper nitrate (Claycop): a mild reagent for the selective nitration of aromatic olefins, Synlett, vol. 25, no. 14, pp. 1997-2000, 2014.
P. K. Upadhyay and Kumar, P., Concise synthesis of (2S,3S,4S)-2-(Hydroxymethyl)pyrrolidine-3,4-diol (LAB1), Synthesis-Stuttgart, no. 18, pp. 3063-3066, 2010.
S. Ramalingam, Bhise, A. D., Show, K., and Kumar, P., Concise synthesis of (5R,6S)-tert-butyl 5-acetoxy-6-(hydroxymethyl)-5,6-dihydropyridine-1(2H)-carboxylate, Arkivoc, no. 2, pp. 220-227, 2013.
S. Kumar Pandey and Kumar, P., Concise synthesis of (-)-deoxoprosopinine, Synlett, no. 18, pp. 2894-2896, 2007.
S. Kumar Pandey, Pandey, M., and Kumar, P., Concise synthesis of protected (2S,4R)-4-hydroxyornithine, Tetrahedron Letters, vol. 49, no. 20, pp. 3297-3299, 2008.
V. Jha and Kumar, P., Croncise organocatalytic route to protected (2S, 4R)-4-hydroxyornithine and(+)-pseudohygroline, Synlett, vol. 25, no. 8, pp. 1089-1092, 2014.
P. Kumar, Chowdhury, P. Sarathi, and Pandey, M., Desymmetrization approach to the enantiopure syn/anti-1,5-diols via hydrolytic kinetic resolution (hkr) of functionalized meso-bis-epoxides: further elaboration to syn/syn-1,3,5-triols and application to the formal synthesis of cryptocarya diacetate, Advanced Synthesis & Catalysis, vol. 355, no. 9, pp. 1719-1723, 2013.
A. Dubey, Kandula, S. Rao V., and Kumar, P., Dimethyl sulfoxide pivaloyl chloride: a new reagent for oxidation of alcohols to carbonyls, Synthetic Communications, vol. 38, no. 5, pp. 746-753, 2008.
D. Patel, Kurrey, G. Ram, Shinde, S. S., Kumar, P., Kim, G. - J., and Thakur, S. Singh, Dinuclear salen cobalt complex incorporating Y(OTf)(3): enhanced enantioselectivity in the hydrolytic kinetic resolution of epoxides, RSC Advances, vol. 5, no. 101, pp. 82699-82703, 2015.
S. Kumar Pandey and Kumar, P., Efficient total synthesis of (-)-(3S,6R)-3,6-dihydroxy-10-methylundecanoic acid, European Journal of Organic Chemistry, no. 2, pp. 369-373, 2007.
P. Guptali and Kumar, P., Efficient total synthesis of decarestrictine D, European Journal of Organic Chemistry, no. 7, pp. 1195-1202, 2008.
P. Kumar, Dubey, A., and Harbindu, A., Enantio- and diastereocontrolled conversion of chiral epoxides to trans-cyclopropane carboxylates: application to the synthesis of cascarillic acid, grenadamide and L-(-)-CCG-II, Organic & Biomolecular Chemistry, vol. 10, no. 34, pp. 6987-6994, 2012.
P. Kumar, Dubey, A., and Harbindu, A., Enantio- and diastereocontrolled conversion of chiral epoxides to trans-cyclopropane carboxylates: application to the synthesis of cascarillic acid, grenadamide and L-(-)-CCG-II (vol 10, pg 6987, 2012), Organic & Biomolecular Chemistry, vol. 18, no. 27, p. 5264, 2020.
P. Kumar, Pandey, M., Gupta, P., S. Naidu, V., and Dhavale, D. D., Enantio- and diastereocontrolled total synthesis of (+)-strictifolione, European Journal of Organic Chemistry, no. 36, pp. 6993-7004, 2010.
S. Sahoo, Kumar, P., Lefebvre, F., and Halligudi, S. B., Enantioselective hydrogenation of olefins by chiral iridium phosphorothioite complex covalently anchored on mesoporous silica, Journal of Catalysis, vol. 254, no. 1, pp. 91-100, 2008.
B. M. Sharma, Gontala, A., and Kumar, P., Enantioselective modular total synthesis of macrolides Sch725674 and C-4-epi-Sch725674, European Journal of Organic Chemistry, no. 6, pp. 1215-1226, 2016.
S. Kumar Pandey and Kumar, P., Enantioselective synthesis of (2R,3R)- and (2S,3S)-beta-hydroxyornithine, Tetrahedron Letters, vol. 47, no. 25, pp. 4167-4169, 2006.
P. Sarathi Chowdhury, Gupta, P., and Kumar, P., Enantioselective synthesis of decarestrictine J, Tetrahedron Letters, vol. 50, no. 51, pp. 7188-7190, 2009.
V. S. Naidu and Kumar, P., Enantioselective synthesis of (-)-pinellic acid, Tetrahedron Letter, vol. 48, no. 13, pp. 2279-2282, 2007.
V. Jha, Kondekar, N. B., and Kumar, P., Enantioselective synthesis of syn/anti-1,3-amino alcohols via proline-catalyzed sequential alpha-aminoxylation/alpha-amination and horner-wadsworth-emmons olefination of aldehydes, Organic Letters, vol. 12, no. 12, pp. 2762-2765, 2010.
P. K. Upadhyay, Prasad, R., Pandey, M., and Kumar, P., Facile synthesis of 5,6-dihydro-5-hydroxy-2(1H)-pyridone, Tetrahedron Letters, vol. 50, no. 20, pp. 2440-2442, 2009.
P. Sarathi Chowdhury, Gupta, P., and Kumar, P., First asymmetric total synthesis of aspinolide A, Tetrahedron Letters, vol. 50, no. 50, pp. 7018-7020, 2009.
U. Nookaraju, Harbindu, A., Bhise, A. D., Sharma, B. M., and Kumar, P., First total synthesis of seimatopolide B, RSC Advances, vol. 2, no. 30, pp. 11231-11234, 2012.
K. Show, Gonnade, R. G., and Kumar, P., First total synthesis of the proposed structure of pandangolide 1, European Journal of Organic Chemistry, no. 25, pp. 3352-3364, 2018.
A. El-Dahshan, Al-Gharabli, S. I., Radetzki, S., Al-Tel, T. H., Kumar, P., and Rademann, J., Flexible, polymer-supported synthesis of sphingosine derivatives provides ceramides with enhanced biological activity, Bioorganic & Medicinal Chemistry, vol. 22, no. 19, pp. 5506-5512, 2014.
P. Gupta and Kumar, P., Formal synthesis of herbarumin III, Tetrahedron-Asymmetry, vol. 18, no. 14, pp. 1688-1692, 2007.
D. Tripathi and Kumar, P., Formal synthesis of tetrahydrolipstatin and tetrahydroesterastin, Tetrahedron-Asymmetry, vol. 23, no. 11-12, pp. 884-890, 2012.
P. Kumar, Dubey, A., and Puranik, V. G., General and concise asymmetric synthesis of sphingosine, safingol and phytosphingosines via tethered aminohydroxylation, Organic & Biomolecular Chemistry, vol. 8, no. 22, pp. 5074-5086, 2010.
P. Kumar, Dubey, A., and Puranik, V. G., General and concise asymmetric synthesis of sphingosine, safingol and phytosphingosines via tethered aminohydroxylation (vol 8, pg 5074, 2010), Organic & Biomolecular Chemistry, vol. 18, no. 27, p. 5265, 2020.
D. Tripathi, Pandey, S. Kumar, and Kumar, P., General approach to medium-sized ring ethers via hydrolytic and oxidative kinetic resolutions: stereoselective syntheses of (-)-cis-lauthisan and (+)-isolaurepan, Tetrahedron, vol. 65, no. 11, pp. 2226-2231, 2009.
B. M. Sharma, Rathod, J., Gonnade, R. G., and Kumar, P., Harnessing nucleophilicity of allenol ester with p-quinone methides via gold catalysis: application to the synthesis of diarylmethine-substituted enones, Journal of Organic Chemistry, vol. 83 , no. 16, pp. 9353-9363, 2018.
J. Rathod, Sharma, P., Pandey, P., Singh, A. P., and Kumar, P., Highly active recyclable SBA-15-EDTA-Pd catalyst for Mizoroki-Heck, Stille and Kumada C-C coupling reactions, Journal of Porous Materials, vol. 24, no. 4, pp. 837-846, 2017.
M. Pandey, Chowdhury, P. Sarathi, Dutta, A. Kumar, Kumar, P., and Pal, S., Highly concise and practical route to clavaminols, sphinganine and (+)-spisulosine via indium mediated allylation of alpha-hydrazino aldehyde and a theoretical insight into the stereochemical aspects of the reaction, RSC Advances, vol. 3, no. 35, pp. 15442-15448, 2013.
H. Hazarkhani, Kumar, P., Kondiram, K. Sachin, and Gadwal, I. M. Shafi, Highly selective claisen-schmidt condensation catalyzed by silica chloride under solvent-free reaction conditions, Synthetic Communications, vol. 40, no. 19, p. PII 926308853, 2010.
P. Kumar and Gupta, P., Hydrolytic kinetic resolution as an emerging tool in the synthesis of bioactive molecules, Synlett, no. 9, pp. 1367-1382, 2009.
N. B. Kondekar and Kumar, P., Iterative approach to enantiopure syn/anti-1,3-polyols via proline-catalyzed sequential alpha-aminoxylation and horner-wadsworth-emmons olefination of aldehydes, Organic Letters, vol. 11, no. 12, pp. 2611-2614, 2009.
N. S. Khonde, Said, M. S., Sabane, J. K., Gajbhiye, J. M., and Kumar, P., Metal-free, Tf2NH-catalyzed 1, 6-conjugate addition of imidazopyridine to para-quinone methides: easy access to C3-functionalized triarylmethane imidazopyridine, Tetrahedron, vol. 101, p. 132510, 2021.
S. S. Shinde, Said, M. S., Surwase, T. B., and Kumar, P., Mild regiospecific alcoholysis and aminolysis of epoxides catalyzed by zirconium(IV) oxynitrate, Tetrahedron Letters, vol. 56, no. 43, pp. 5916-5919, 2015.
C. Singh, Rathod, J., Jha, V., Panossian, A., Kumar, P., and Leroux, F. R., Modular synthesis of biaryl-substituted phosphine ligands: application in microwave-assisted palladium-catalyzed C-N cross-coupling reactions, European Journal of Organic Chemistry, no. 29, pp. 6515-6525, 2015.
S. Ramalingam and Kumar, P., Multi-component carbon-carbon bond forming Mannich reaction catalyzed by yttria-zirconia based Lewis acid, Catalysis Communications, vol. 9, no. 14, pp. 2445-2448, 2008.
P. K. Upadhyay and Kumar, P., Novel synthesis of coumarins employing triphenyl(alpha-carboxymethylene)-phosphorane imidazolide as a C-2 synthon, Tetrahedron Letters, vol. 50, no. 2, pp. 236-238, 2009.
S. S. Shinde, Patil, S. N., Ghatge, A., and Kumar, P., Nucleophilic fluorination using imidazolium based ionic liquid bearing tert-alcohol moiety, New Journal of Chemistry, vol. 39, no. 6, pp. 4368-4374, 2015.
A. Harbindu and Kumar, P., Organocatalytic enantioselective approach to the synthesis of verbalactone and (R)-massoialactone, Synthesis-Stuttgart, no. 12, pp. 1954-1959, 2011.
N. Dwivedi, Tripathi, D., and Kumar, P., Organocatalytic route to the synthesis of (6S)-5,6-dihydro-6-[(2R)-2-hydroxy-6-phenylhexyl]-2H-pyran-2-one and ravensara lactones, Tetrahedron-Asymmetry, vol. 22, no. 18-19 , pp. 1749-1756, 2011.
P. Kumar, Pandey, M., Gupta, P., and Dhavale, D. D., Organocatalytic route to the synthesis of lactone moiety of compactin and mevinolin, Tetrahedron Letters, vol. 51, no. 44, pp. 5838-5839, 2010.
V. Jha and Kumar, P., Organocatalytic stereoselective approach to the total synthesis of (-)-halosaline, RSC Advances, vol. 4, no. 7, pp. 3238-3244, 2014.
P. Kumar, Pandey, M., Gupta, P., and Dhavale, D. D., Organocatalytic stereoselective synthesis of passifloricin A, Organic & Biomolecular Chemistry, vol. 10, no. 9, pp. 1820-1825, 2012.
S. Sahoo, Kumar, P., Lefebvre, F., and Halligudi, S. B., Oxidative kinetic resolution of alcohols using chiral Mn-salen complex immobilized onto ionic liquid modified silica, Applied Catalysis A-General, vol. 354, no. 1-2, pp. 17-25, 2009.
A. Dubey, Upadhyay, A. K., and Kumar, P., Pivaloyl chloride/DMF: a new reagent for conversion of alcohols to chlorides, Tetrahedron Letters, vol. 51, no. 4, pp. 744-746, 2010.
P. Kumar and Dwivedi, N., Proline catalyzed alpha-aminoxylation reaction in the synthesis of biologically active compounds, Accounts of Chemical Research, vol. 46, no. 2, pp. 289-299, 2013.
P. Kumar and Sharma, B. M., Proline-catalyzed asymmetric -amination in the synthesis of bioactive molecules, Synlett, vol. 29, no. 15, pp. 1944-1956, 2018.
P. Kumar, Jha, V., and Gonnade, R. G., Proline-catalyzed asymmetric synthesis of syn- and anti-1,3-diamines, Journal of Organic Chemistry, vol. 78, no. 23, pp. 11756-11764, 2013.
M. S. Said, Mishra, A., Pandole, S., Nayak, R. A., Kumar, P., and Gajbhiye, J. M., Regioselective one-pot synthesis of 3-fluoro-imidazo[1,2-a]pyridines from styrene, Asian Journal of Organic Chemistry, 2019.
P. Kumar, Pandey, M., Gupta, P., and Dhavale, D. D., Retraction: organocatalytic stereoselective synthesis of passifloricin A (Retraction of Vol 10, Pg 1820, 2012), Organic & Biomolecular Chemistry, vol. 17, no. 8, p. 2289, 2019.
P. K. Upadhyay and Kumar, P., Short and efficient synthesis of (S)-(+)-2-(Hydroxymethyl)-6-piperidin-2-one, Synthesis-Stuttgart, no. 15, pp. 2512-2514, 2010.
V. S. Naidu and Kumar, P., Simple and efficient approach to 1,3-aminoalcohols: application to the synthesis of (+)-negamycin, Tetrahedron Letter, vol. 48, no. 22, pp. 3793-3796, 2007.
S. Vandana Kauloorkar, Jha, V., Jogdand, G. F., and Kumar, P., Stereocontrolled synthesis of Hagen's gland lactones via iterative proline catalyzed alpha-aminoxylation and oxa-Michael addition reactions, RSC Advances, vol. 5, no. 75, pp. 61000-61005, 2015.
V. Jha, Kauloorkar, S. Vandana, and Kumar, P., Stereoselective approach to 2,6-disubstituted piperidin-3-ol: synthesis of (-)-deoxoprosopinine and (+)-deoxoprosophylline, European Journal of Organic Chemistry, no. 22, pp. 4897-4902, 2014.
S. Vandana Kauloorkar, Jha, V., Jogdand, G. F., and Kumar, P., Stereoselective approach to indolizidine and pyrrolizidine alkaloids: total synthesis of (-)-lentiginosine, (-)-epi-lentiginosine and (-)-dihydroxypyrrolizidine, Organic & Biomolecular Chemistry, vol. 12, no. 25, pp. 4454-4460, 2014.
A. Dubey, Harbindu, A., and Kumar, P., Stereoselective synthesis of (-)-galantinic acid, Synthesis-Stuttgart, no. 6, pp. 901-904, 2011.
K. Show, Gupta, P., and Kumar, P., Stereoselective synthesis of ophiocerins A and C, Tetrahedron-Asymmetry, vol. 22, no. 11, pp. 1212-1217, 2011.
A. Harbindu and Kumar, P., Synthesis of aculeatins A and B via iterative hydrolytic kinetic resolution, Synthesis-Stuttgart, no. 9, pp. 1479-1484, 2010.
S. Ramalingam and Kumar, P., Synthesis of alpha-amino phosphonates by three component condensation of carbonyl compound, amine, and dialkyl phosphite using Yttria-zirconia based Lewis acid catalyst, Catalysis Letters, vol. 125, no. 3-4, pp. 315-319, 2008.
S. Sahoo, Kumar, P., Lefebvre, F., and Halligudi, S. B., Synthesis of chiral sulfoxides by enantioselective sulfide oxidation and subsequent oxidative kinetic resolution using immobilized Ti-binol complex, Journal of Catalysis, vol. 262, no. 1, pp. 111-118, 2009.
A. Dubey, Kauloorkar, S. Vandana, and Kumar, P., Synthesis of (-)-galantinic acid via iterative hydrolytic kinetic resolution and tethered aminohydroxylation, Tetrahedron, vol. 66, no. 17, pp. 3159-3164, 2010.
P. Sharma, Rathod, J., Singh, A. P., Kumar, P., and Sasson, Y., Synthesis of heterogeneous Ru(II)-1,2,3-triazole catalyst supported over SBA-15: application to the hydrogen transfer reaction and unusual highly selective 1,4-disubstituted triazole formation via multicomponent click reaction, Catalysis Science & Technology, vol. 8, no. 13, pp. 3246-3259, 2018.
S. Vandana Kauloorkar, Jha, V., and Kumar, P., Synthesis of indolizidine, pyrrolizidine and quinolizidine ring systems by proline-catalyzed sequential alpha-amination and HWE olefination of an aldehyde, RSC Advances, vol. 3, no. 40, pp. 18288-18291, 2013.
K. Show and Kumar, P., Synthesis of ophiocerins A, B and C, botryolide E, decarestrictine O, stagonolide C and 9-epi-stagonolide C employing chiral hexane-1,2,3,5-tetraol derivatives as building blocks, European Journal of Organic Chemistry, vol. 27, pp. 4696-4710, 2016.
N. B. Kondekar and Kumar, P., Synthesis of (R)-coniine and (S)-coinicine via organocatalytic alpha-aminoxylation of an aldehyde, Synthesis-Stuttgart, no. 18, pp. 3105-3112, 2010.
N. B. Kondekar and Kumar, P., Synthesis of (R)-selegiline via hydrolytic kinetic resolution, Synthetic Communications, vol. 41, no. 9, p. PII 935777980, 2011.
A. Dubey and Kumar, P., Tethered aminohydroxylation route to L-arabino-[2R,3S,4R] and L-xylo-[2R,3S,4S]-C-18-phytosphingosines, Tetrahedron Letters, vol. 50, no. 26, pp. 3425-3427, 2009.
S. Satbhaiya, Khonde, N. S., Rathod, J., Gonnade, R., and Kumar, P., Tf2NH catalyzed 1,6-conjugate addition of 2-hydroxy-p-quinone methides with -functionalized ketones: access to 2,3,4,9-Tetrahydro-1H-xanthenones and 4H-Chromene Derivatives, European Journal of Organic Chemistry, no. 20, pp. 3127-3133, 2019.
J. Rathod, Sharma, B. M., Mali, P. S., and Kumar, P., Tf2NH-catalyzed 1,6-conjugate addition of vinyl azides with p-quinone methides: a mild and efficient method for the synthesis of β-bis-arylamides, Synthesis, 2017.
M. S. Said, Udavant, R., Sahu, A. Kumar, Khan, A., Nayak, R., Dastager, S. G., Kumar, P., and Gajbhiye, J., Total synthesis of (-)-2-methoxy-2-butenolide-3-cinnamate and its antimicrobial potentials, Natural Product Research, 2020.
S. Vandana Kauloorkar and Kumar, P., Total synthesis of (-)-(6R,11R,14S)-colletallol via proline catalyzed alpha-aminoxylation and Yamaguchi macrolactonization, RSC Advances, vol. 6, no. 68, pp. 63607-63612, 2016.
D. Tripathi and Kumar, P., Total synthesis of (+)-isolaurepan, Tetrahedron Letters, vol. 49, no. 49, pp. 7012-7014, 2008.
U. Nookaraju and Kumar, P., Total synthesis of (+)-petromyroxol via tandem alpha-aminoxylation-allylation and asymmetric dihydroxylation-S(N)2 cyclization approach, RSC Advances, vol. 5, no. 78, pp. 63311-63317, 2015.
P. Sarathi Chowdhury and Kumar, P., Total synthesis of umuravumbolide and hyptolide through silicon-tethered ring-closing metathesis, European Journal of Organic Chemistry, vol. 2013, no. 21, pp. 4586-4593, 2013.
P. Kumar, Tripathi, D., Sharma, B. M., and Dwivedi, N., Transition metal catalysis-a unique road map in the stereoselective synthesis of 1,3-polyols, Organic & Biomolecular Chemistry, vol. 15, no. 4, pp. 733-761, 2017.
B. M. Sharma, Yadav, M., Gonnade, R. G., and Kumar, P., Unified approach to fused and spirocyclic oxindoles through lewis-acid-promoted opening of spiroepoxyoxindoles with allylsilanes: application to the formal synthesis of (+/-)-physovenine, European Journal of Organic Chemistry, no. 18, pp. 2603-2609, 2017.
B. M. Sharma, Shinde, D. R., Jain, R., Begari, E., Satbhaiya, S., Gonnade, R. G., and Kumar, P., Unravelling the nucleophilicity of buten tides for 1,6-conjugate addition to p-quinone methides: a direct access to diversely substituted butenolide-derived diarylmethanes, Organic Letters, vol. 20, no. 9, pp. 2787-2791, 2018.
S. Ramalingam and Kumar, P., Yttria-zirconia-based lewis acid catalysis of the biginelli reaction: an efficient one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones, Synthetic Communications, vol. 39, no. 7, p. PII 909239399, 2009.