Publications from NIT Uttarakhand:
24) ortho–Hydroxylation of N–Nitrosoanilines Using Palladium Acetate and TBHP. Sandeep Singh, S. R. De* Eur. J. Org. Chem. 2025, 28, e202500057. https://doi.org/10.1002/ejoc.202500057.
23) Copper-promoted dimerization of benzyl thiocyanates to access functionalized bibenzyles. Sandeep Singh, S. R. De* Synlett, 2025, 36, 254-258. DOI: 10.1055/a-2330- 9955.
22) Hydroxylamine-O-Sulfonic Acid (HOSA): A Recent Synthetic Overview. Puneet Kumar, Ashirwad Divedi, Dinesh Chandra, S. R. De, Jawahar L. Jat*. ChemistrySelect, 2024, 9, e202401805. https://doi.org/10.1002/slct.202401805
21) Deoxygenation of benzylphenyl sulfones using 1,2-bis(diphenylphosphino)ethane (dppe)/NBS under metal-free conditions. Asha Joshi, Sandeep Singh, Zafar Iqbal, Prachi Rai, S. R. De* Synth. Commun. 2024, 54, 1690-1697. https://doi.org/10.1080/00397911.2024.2401135
20) Deoxygenation of sulfoxides using D-camphorsulfonic acid as an efficient reducing agent under metal and additive-free conditions. Asha Joshi, Sandeep Singh, S. R. De* J. Chem. Sci. 2024, 136, 1-6. https://doi.org/10.1007/s12039-024-02261-x
19) Metal nitrate promoted highly regiospecific ortho–nitration of phenols: Application to the synthesis of nitroxynil. Z. Iqbal, A. Joshi, S. R De* Synth. Commun. 2023, 53, 557- 567. https://doi.org/10.1080/00397911.2023.2184270
18) 1,2-Bis(diphenylphosphino)ethane (dppe)/NBS: An Unprecedented Combination for Deoxygenation of Sulfoxides Under Mild Conditions. A. Joshi, Z. Iqbal, S. R. De* ChemistrySelect, 2022, 7, e202202924. https://doi.org/10.1002/slct.202202924
17) Pd(II)-Catalyzed Non-Directed Benzylic C(sp3)-H Activation: Cascade C(sp3)-S Bond Cleavage to Access Benzaldehydes from Benzylphenyl Sulfides and Sulfoxides. A. Joshi, Z. Iqbal, P. Kandwal, S. R. De* Asian J. Org. Chem. 2022, 11, e202200518. This work has been featured on the cover page of the journal. Please see the link: https://onlinelibrary.wiley.com/doi/10.1002/ajoc.202200518
16) Ceric Ammonium Nitrate (CAN) Promoted Highly Chemo- and Regioselective ortho-Nitration of Anilines Under Mild Conditions. Z. Iqbal, A. Joshi, S. R De* Eur. J. Org. Chem. 2022, e202200746. https://doi.org/10.1002/ejoc.202200746
15) Methyltrioxorhenium (MTO) Catalysis in Epoxidation of Alkenes: A Synthetic Overview. S. Verma, A. Joshi. S. R. De, J. L. Jat* New J. Chem. 2022, 46, 2025.
https://doi.org/10.1039/D1NJ04950J
14) CO free esterifications of (Hetero) arenes via transition-metal-catalyzed chelation-induced C–H activation: Recent updates. Asha Joshi, Sandeep Singh, Zafar Iqbal, S. R. De* Tetrahedron 2022, 104, 132601. https://doi.org/10.1016/j.tet.2021.132601
13) Pd(II)-Catalyzed Chelation-Induced C(sp2)-H Acylation of (Hetero)Arenes Using Toluenes as Aroyl Surrogate. Asha Joshi, Zafar Iqbal, Jawahar L. Jat, S. R. De* ChemistrySelect 2021, 6, 12383-12406. https://doi.org/10.1002/slct.202103003
12) N-Nitroso As A Novel Directing Group in Transition-Metal-Catalyzed C(sp2) H Bond Functionalizations of N-Nitrosoanilines. S. R. De* Asian J. Org. Chem. 2021, 10, 980- 1011. https://doi.org/10.1002/ajoc.202100114
11) Diaryliodonium Salts in Transition-Metal-Catalyzed Chelation-Induced C(sp2/sp3) H Arylations. Asha Joshi and S. R. De* Eur. J. Org. Chem. 2021, 1837- 1858. https://doi.org/10.1002/ejoc.202100066
10) Recent Advancements on Transition-Metal-Catalyzed, Chelation Induced ortho-Hydroxylation of Arenes. Z. Iqbal, A. Joshi and S. R. De* Adv. Synth. Catal. 2020, 362, 5301-5351. https://doi.org/10.1002/adsc.202000762
Publications from PhD & Postdoc:
9) Regio- and Enantioselective Catalytic Monoepoxidation of Conjugated Dienes:Synthesis of Chiral Allylic cis-Epoxides. J. L. Jat.; S. R. De.; G. Kumar.; S. Birudaraju.; A. M. Adebesin.; S. K. Gandham.; J. R. Falck. Org. Lett. 2015, 17, 1058-1061.
8) Regio- and Stereoselective Monoepoxidation of Dienes using Methyltrioxorhenium:Synthesis of Allylic Epoxides. S. R. De.; G. Kumar.; J. L. Jat.; S. Birudaraju.; B. Lu.; R. Manee.; N. Puli.; A. M. Adebesin.; J. R. Falck. J. Org. Chem. 2014, 79, 10323-10333.
7) Stereoselective Synthesis of Hydroxy Stilbenoids and Styrenes by Atom-efficient Olefination with Thiophthalides. P. Mitra.; B. Shome.; S. R. De.; A. Sarkar.; D. Mal. Org. Biomol. Chem. 2012, 10, 2742-2752.
6) Total synthesis of Euplectin, a natural product with a chromone fused indenone. D. Mal.; S. R. De. Org. Lett. 2009, 11, 4398-4401.
5) Synthesis and rearrangement of quinone-embedded epoxycyclopentenones: a new avenue to pyranonaphthoquinones and indenopyranones. S. R. De; S.K. Ghorai; D. Mal. J. Org. Chem. 2009, 74, 1598-1604.
4) Synthesis of benzo[b]fluorenone nuclei of stealthins. S. K. Ghorai.; S. R. De.; R. Karmakar.; N. K. Hazra.; D. Mal. Res. Lett. Org. Chem. 2009, (vol. 2009), Article ID 528081, doi:10.1155/2009/528081.
3) DBU-MeI, a potential substitute for CH2N2 for the preparation of methyl esters: Studies with assorted carboxylic acids. D. Mal.; A. K. Jana.; S. Ray.; S. Bhattacharya.; A. Patra.; S. R. De. Synth. Commun. 2008, 38, 3937-3946.
2) Regiospecific synthesis of 3-(2,6-dihydroxyphenyl)phthalides: application to the synthesis of isopestacin and cryphonectric acid. D. Mal.; P. Pahari.; S. R. De. Tetrahedron 2007, 63, 11781-11792.
1) Regiospecific synthesis of benzo[b]fluorenones via ring contraction by benzyl-benzilic acid rearrangement of benz[a]anthracene-5,6-diones. A. Patra.; S. K. Ghorai.; S. R. De; D. Mal. Synthesis 2006, 15, 2556-2562.