Publications | rambabu-chegondi

31. Ag(I)-catalyzed diastereoselective oxidative cyclopropanation of prochiral alkyne-tethered 1,3-dicarbonitriles
Navaneetha, N.; Munakala, A.; Chegondi, R.*
Chem. Commun. 2024, 60, xxxx-xxxx. [Link ]

chemical-science-journal-cover_f2c-900_w

20. Enantioselective Cu(I)-catalyzed borylative cyclization of enone-tethered cyclohexadienones and mechanistic insights

Jadhav, S. B.; Dash, S. R.; Maurya, S.; Nanubolu, J. B.; Vanka, K.; Chegondi, R.*
Nat. Commun. 2022, 13, 854. [Link]

19. Metal-free oxidative formal C(sp2)–H arylation of cyclopentene-1,3-diones with β-naphthols

Maurya, S.; Jadhav, S. B.; Chegondi, R.*
Org. Biomol. Chem., 2022, 20, 2059-2063. [Link]

18. Steric- and Electronic-Controlled Intramolecular [2 + 2]- Cycloaddition of Cyclohexadienone-Containing 1,7-Enynes

Munakala, A.; Nallamilli, T.; Nanubolu, J. B.; Chegondi, R.*
Org. Lett. 2022, 24, 892-896. [Link]

17. Rh(III)-Catalyzed Diastereoselective Cascade Annulation of Enone-Tethered Cyclohexadienones via a C(sp2)−H Bond Activation

Jadhav, S. B.; Sundaram Maurya, S.; Navaneetha, N; Chegondi, R.*
Chem. Commun. 2021, 57, 13598-13601. [Link]

16. Transition-Metal Catalyzed Stereoselective Desymmetrization of Prochiral Cyclohexadienones

Munakala. A.; Phanindrudu, M.; Chegondi, R.*
Chem. Rec. 2021, 21, 3689-3726. [Link] Invited Personal Account to the Special Issue on Transition-Metal Catalysis

15. Design, Synthesis and Application of Spiro[4.5]cyclohexadienones via One-pot Sequential p-Hydroxybenzylation/Oxidative Dearomatization

Patil, V. B.; Nanubolu, J. B.; Chegondi, R.*
Chem. Commun. 2021, 57, 5574-5577. [Link] Invitation to the ChemComm Emerging Investigators Collection 2021

14. Organocatalytic Enantioselective Desymmetrization of Prochiral 2,2-Disubstituted Cyclic 1,3-Diones

Chegondi, R.*, Patel, S. M.; Maurya, S.; Donthoju, A.
Asian J. Org. Chem. 2021, 10, 1267-1281. [Link] Invited Review to the Special Issue on Organocatalysis

13. Silver(I)-Catalyzed Enyne cyclization/Aromatization of Alkyne-Tethered Cyclohexadienones to Access meta-Substituted Phenols

Munakala. A.; Chegondi, R.*
Org. Lett. 2021, 23, 317-323. [Link]

12. Rh(I)-Catalyzed Stereoselective Desymmetrization of Prochiral Cyclohexadienones via Highly exo-Selective Huisgen-Type [3+2] Cycloaddition

Gollapelli, K. K.; Patil, V. B.; Vinaykumar, A.; Chegondi, R.*

Chem. Sci. 2021, 12, 1544-1550. [Link]

11. Silver(I)-Catalyzed Oxidative Intramolecular Cyclopropanation: Access to Complex Tricyclo[3.3.1.0]nonanediones via Semipinacol-Type Rearrangement

Munakala. A.; Gollapelli, K. K.; Nanubolu, J. B.; Chegondi, R.*

Org. Lett. 2020, 22, 7019-7024. [Link]

10. Diastereoselective Desymmetrization of p-Quinamines through Regioselective Ring Opening of Epoxides and Aziridines

Jadhav, S. B.; Chegondi, R.*

Org. Lett. 2019, 21, 10115-10119. [Link]

9. Enantioselective Desymmetrization of Prochiral Cyclopentene-1,3-diones Triggered by Remote C(sp2)−N Bond Formation

Donthoju, A.; Magham, L.R.; Singh, N.; Manjula, N.; Chegondi, R.*
J. Org. Chem. 2019, 84, 15735-15744 [Link]

8. Stereoselective Desymmetrization of Cyclohexadienone-Tethered Enones: Efficient Access to Highly Strained Polycyclic Indoles

Thopate, S.B.; Jadhav, S.B.; Nanubolu, J. B.; Chegondi, R.*

ACS Catal. 2019, 9, 10012–10019 [Link]

7. Rh-Catalyzed diastereoselective desymmetrization of enone tethered-cyclohexadienones via tandem arylative cyclization

Jadhav, S.B.; Thopate, S.B.; Nanubolu, J. B.; Chegondi, R.*

Org. Biomol. Chem. 2019, 17, 1937–1946 ( Invited article: New Talent Theme) [Link]

6. Rhodium-Catalyzed Highly Regio- and Enantioselective Reductive Cyclization of Alkyne Tethered Cyclohexadienones

Gollapelli, K. K.; Donikela, S.; Manjula, N.; Chegondi, R.*

ACS Catal. 2018, 8, 1440–1447 [Link]

5. Tunable Diastereoselective Desymmetrization of Cyclohexadienones Triggered by Copper-Catalyzed Three Component Coupling Reaction

Anugu, R. R.; Chegondi, R.*

J. Org. Chem. 2017, 82, 6786–6794 [Link]

4. Cp*Co(III)-Catalyzed C–H Functionalization Cascade of N-Methoxyamides with Alkynedione for the Synthesis of Indolizidines

Chavan, L. C.; Gollapelli, K. K.; Chegondi, R., Pawar, A. B.

Org. Lett. 2017, 19, 2186–2189 [Link]

3. Carbonyl-assisted reverse regioselective cascade annulation of 2-acetylenic ketones triggered by Ru-catalyzed C–H activation

Gollapelli, K. K.; Kallepu, S.; Govindappa, N.; Nanubolu, J. B.; Chegondi, R.*

Chem. Sci. 2016, 7, 4748–4753 [Link]

2. Synthesis of Highly Strained Bicyclic[3.2.1]alkenes by Metal-catalyzed Conia-ene Reaction

Kallepu, S.; Gollapelli, K. K.; Nanubolu, J. B. Chegondi, R.*

Chem. Commun. 2015, 51, 16840–16843 [Link]

1. Palladium-Catalyzed Regioselective Domino Cyclization of Cyclohexadienoes

Murthy, A. S.; Donikela, S.; Reddy, C. S.; Chegondi, R.*
J. Org. Chem. 2015, 80, 5566–5571 [Link]

Book Chapters

01. Handbook of metathesis-Volume II: Application in Organic Synthesis_General Ring‐Closing Metathesis.

Chegondi, R.; Maitra, S.; Markley, J. M.; Hanson, P. R.*

Wiley inter science, General RCM Book Chapter, (Grubbs et al., Eds)

Wiley-VCH: Weinheim, Germany, 2013. [Link]

Post-doctoral & Ph.D. Publications

27. Tetrahydrothiopyran-4-one as Five-Carbon Source for Scalable Synthesis of (±)-Tapentadol.

Krantikumar, R.; Mainkar, P. S.;Sukumar, G.; Chegondi, R.; Chandrasekhar, S.*

Org. Process Res. Dev. 2019, 23, 1369–1373. [Link]

26. Benzyne Insertion onto β-Keto Esters of Polycyclic Natural Products: Synthesis of Benzo Octacyclo Scaffolds.

Kallepu, S.; Sanjeev, K.; Chegondi, R.; Mainkar, P. S.; Chandrasekhar, S.*

Org. Lett. 2018, 20, 7121–7124. [Link]

25. Syntheses of 2‑Aroyl Benzofurans through Cascade Annulation on Arynes.

Gouthami, P.; Chavan, L. N.; Chegondi, R.; Chandrasekhar, S.*

J. Org. Chem. 2018, 83, 3325–3332. [Link]

24. Synthetic Strategy toward the Pentacyclic Core of Melodinus Alkaloids.

Goli, N.; Kallepu, S.; Mainkar, P. S.; Lakshmi, J. K.; Chegondi, R.; Chandrasekhar, S.*

J. Org. Chem. 2018, 83, 2244–2249. [Link]

23. Ruthenium (II)-Catalyzed Hydration of Terminal Alkynes in PEG-400.

Mainkar, P. S.; Chippala, V.; Chegondi, R.; Chandrasekhar, S.*

Synlett 2016, 27, 1969–1972. [Link]

22. Expanding Diversity without Protecting Groups: (+)-Sclareolide to Indolosesquiterpene Alkaloid Mycoleptodiscin A and

Analogues.

Nagaraju, K.; Chegondi, R.; Chandrasekhar, S.*

Org. Lett. 2016, 18, 2684–2687 (First two authors contributed equally to this work). [Link]

21. Formal Total Synthesis of (±)-Cephalotaxine and Congeners via Aryne Insertion Reaction.

Gouthami, P.; Chegondi, R.; Chandrasekhar, S.*

Org. Lett. 2016, 18, 2044–2046. [Link]

20. Insertion of N‑Tosylacetimidates/Acetimidamides onto Arynes via [2 + 2] Cycloaddition.

Kranthikumar, R.; Chegondi, R.; Chandrasekhar, S.*

J. Org. Chem. 2016, 81, 2451-2459. [Link]

19. Total Synthesis of a Natural Product in Poly(ethylene glycol): (±)-Centrolobine.

Reddy, A. S.; Chegondi, R.; Chandrasekhar, S.*

Proc. Indian Natn. Sci. Acad. 2015, 81, 1171-1175. [Link]

18. Phosphate tether-mediated ring-closing metathesis for the generation of medium to large, P-stereogenic bicyclo[n.3.1]phosphates. Maitra, S.; Markley, J. L.; Chegondi, R.; Hanson, P. R.*

Tetrahedron 2015, 56, 5734-5740. [Link]

17. Tandem Organocatalytic Approach to C28-C35 Fragment of Eribulin Mesylate.

Chavan, L. N.; Chegondi, R.; Chandrasekhar, S.*

Tetrahedron Lett. 2015, 56, 4286-4288. [Link]

16. Synthetic Studies to Lyngbouilloside: A Phosphate Tether-Mediated Synthesis of the Macrolactone Core.

Chegondi, R.; Hanson, P. R.*

Tetrahedron Lett. 2015, 56, 3330-3333. (Special issue to Prof. Wasserman) [Link]

15. A Modular Phosphate Tether-Mediated Divergent Strategy to Complex Polyols.

Hanson, P. R.*; Jayasinghe, S.; Maitra, S.; Ndi, C. N.; Chegondi, R.

Beilstein J. Org. Chem. 2014, 10, 2332-2337. [Link]

14. Multicomponent Reactions in PEG-400: Ruthenium-Catalyzed Synthesis of Substituted Pyrroles.

Chandrasekhar, S.*; Patro, V.; Chavan, L. N.; Chegondi, R.; Gree, R.

Tetrahedron Lett. 2014, 55, 5932-5935. [Link]

13. Phosphate Tether-Mediated Ring-Closing Metathesis Studies to Complex 1,3-anti-Diol-Containing Subunits.

Chegondi, R.; Maitra, S.; Markley, J. L.; Hanson, P. R.*

Chem. Eur. J. 201319, 8088–8093. [Link]

12. A Phosphate Tether-Mediated, One-Pot, Sequential Ring-Closing Metathesis/Cross-Metathesis/Chemoselective Hydrogenation Protocol.

Venukadasula, P. K. M.; Chegondi, R.; Suryn, G.; Hanson, P. R.*

Org. Lett. 2012, 14, 2634–2637. [Link]

11. Total Synthesis of Dolabelide C: A Phosphate-Mediated Approach.

Hanson, P. R.*; Chegondi, R.; Nguyen, J.; Thomas, C. D.; Waetzig, J. D.; Whitehead, A.

J. Org. Chem. 2011, 76, 4358–4370. (Feature Article) [Link]

10. Phosphate Tether-Mediated Approach to the Formal Total Synthesis of (–)-Salicylihalamides A and B.

Chegondi, R.; Tan, M. M. L.; Hanson, P. R.*

J. Org. Chem. 2011, 76, 3909–3916. [Link]

09. A Concise, Phosphate-Mediated Approach to the Total Synthesis of (–)-Tetrahydrolipstatin.

Venukadasula, P. K. M.; Chegondi, R.; Maitra, S.; Hanson, P. R.*

Org. Lett. 2010, 12, 1556–1559. [Link]

08. Stereoflexible total synthesis of (–)- epiquinamide A.

Chandrasekhar, S.*; Parida, B, B.; Chegondi, R.

Tetrahedron Lett. 2009, 50, 3294–3295. [Link]

07. Spirastrellolide B: The Synthesis of Southern (C9–C25) Region.

Chandrasekhar, S.*; Chegondi, R.; Reddy, A. S.

Org. Lett. 2008, 10, 4355–4357. [Link]

06. Total Synthesis of Hyacinthacine A1, a Glycosidase Inhibitor.

Chandrasekhar, S.*; Parida, B, B.; Chegondi, R.

J. Org. Chem. 2008, 73, 7826–7828. [Link]

05. Asymmetric synthesis of (+)-passifloricin A and its 6-epimer.

Chandrasekhar, S.*; Chegondi, R.; Reddy, A. S.

Tetrahedron Lett. 2008, 49, 4476–4478. [Link]

04. Total synthesis of aculeatins A and B via a tethered oxa-Michael approach.

Chandrasekhar, S.*; Chegondi, R.; Shyamsunder, T.

Tetrahedron Lett. 2007, 48, 4683–4685. [Link]

03. A Pd(OAc)2-Mediated One-Pot Synthesis of Tri-substituted Alkenes via Michael Addition of a Stabilized Ylide to Baylis-Hillman Adducts.

Sai Krishna Murthy, P. A.; Chegondi, R.; Vijeender, K.; Parida, B, B.; Chandrasekhar, S.*;

Synlett 2007, 0494–0496. [Link]

02. Three-component coupling of alkynes, Baylis–Hillman adducts and sodium azide: a new synthesis of substituted triazoles.

Chandrasekhar, S.*; Basu, D.; Chegondi, R.

Tetrahedron Lett. 2006, 47, 3059–3063. [Link]

01. Total synthesis of 6-epiprelactone-V via a syn-selective oxygen tethered intramolecular Michael reaction.

Chandrasekhar, S.;* Chegondi, R.; Prakash, S. J.

Tetrahedron Lett. 2006, 47, 1213–1215. [Link]

30. Cascade Oxypalladation/1,3-Palladium Shift to Access Cyclopentene-Fused Isocoumarins
Patil, V. B.; Raghu Ramudu, G.; Chegondi, R.*
Org. Lett. 2024, 26, 6353-6358. [Link ]

29. Strategic enzymatic enantioselective desymmetrization of prochiral cyclohexa-2,5- dienones

Kattula, B.; Munakala, A.; Kashyap, R.; Nallamilli, N.; Nagendla, N, K.; Naza, S.; Mudiam, M. K. R.; Chegondi, R.;* and Addlagatta, A.*
Chem. Commun. 2024, 60, 6647-6650. [Link ]

28. Organocatalytic enantioselective desymmetrization of enal-tethered cyclohexane-1,3-diones

Magham, L. R.; Abdus Samad, A.; Thopate, S. B.; Nanubolu, J. B.; Chegondi, R.*
Chem. Commun. 2024, 60, 3834-3837 . [Link]  Invitation to the "ChemComm 60th Anniversary Authors Collection"

27. Combined Lewis Acid Catalyzed Diastereoselective Halogenative Cascade Annulation of Enone-Tethered Cyclohexadienones
Tarun, A.; Anandarao, M; Chegondi, R.*
Org. Lett. 2023, 25, 8240-8245. [Link ]

26. Rh2(II)-Catalyzed Selective C(sp3 )−H Bond Electrophilic Amination of Aryl Azide-Tethered 1,3-Dicarbonyl compounds

Donthoju, A.; Phanindrudu, M.; Ellandula, S.; Ratan Lal M.; Nanubolu, J. B.; Chegondi, R.* (First 4 authors equally contributed)
Org. Lett. 2023, 25, 7589–7594. [Link] Highly-accessed article from Organic Letters

25. Site-selective and stereoselective transformations on p-quinols & p-quinamines

Thopate, S. B.; Jadhav, S. B.; Phanindrudu, M.; Chegondi, R.* (First 3 authors equally contributed)
Chem. Commun. 2023, 59, 3795-3811. [Link] Invitation to the "2023 Pioneering Investigators"

24. Solvent-Mediated Enantioselective Rauhut–Currier Cyclization via Iminium and Enamine Activation

Thopate, S. B.; Magham, L. R.; Dinda, S.; Chegondi, R.
Org. Lett. 2023, 25, 1072-1077. [Link]

23. Enantioselective Desymmetrization Triggered by Iminium-Enamine Activation: Access to Complex Cyclohepta[b]indoles

Magham, L. R.; Thopate, S. B.; Samad, A.; Chegondi, R.*
Chem. Eur. J. 2023, xx, e202203435. [Link]

22. CuH-Catalyzed Enantioselective Desymmetrization of Cyclic 1,3-Diketones

Patil, V. B.; Jadhav, S. B.; Nanubolu, J. B.; Chegondi, R.*
Org. Lett. 2022, 24, 8233-8238. [Link]

21. Palladium(0)-Catalyzed Remote Decarboxylative Allylation and Base-Mediated 1,3-Migration

Donthoju, A.; Munakala, A.; Ellandula, S.; Chegondi, R.*
J. Org. Chem. 2022, 87, 8267-8276. [Link]

31. Ag(I)-catalyzed diastereoselective oxidative cyclopropanation of prochiral alkyne-tethered 1,3-dicarbonitriles Navaneetha, N.; Munakala, A.; Chegondi, R.* Chem. Commun. 2024, 60, xxxx-xxxx. [Link]

20. Enantioselective Cu(I)-catalyzed borylative cyclization of enone-tethered cyclohexadienones and mechanistic insights Jadhav, S. B.; Dash, S. R.; Maurya, S.; Nanubolu, J. B.; Vanka, K.; Chegondi, R.* Nat. Commun. 2022, 13, 854. [Link]

19. Metal-free oxidative formal C(sp2)–H arylation of cyclopentene-1,3-diones with β-naphthols Maurya, S.; Jadhav, S. B.; Chegondi, R.* Org. Biomol. Chem., 2022, 20, 2059-2063. [Link]

18. Steric- and Electronic-Controlled Intramolecular [2 + 2]- Cycloaddition of Cyclohexadienone-Containing 1,7-Enynes Munakala, A.; Nallamilli, T.; Nanubolu, J. B.; Chegondi, R.* Org. Lett. 2022, 24, 892-896. [Link]

17. Rh(III)-Catalyzed Diastereoselective Cascade Annulation of Enone-Tethered Cyclohexadienones via a C(sp2)−H Bond Activation Jadhav, S. B.; Sundaram Maurya, S.; Navaneetha, N; Chegondi, R.* Chem. Commun. 2021, 57, 13598-13601. [Link]

16. Transition-Metal Catalyzed Stereoselective Desymmetrization of Prochiral Cyclohexadienones Munakala. A.; Phanindrudu, M.; Chegondi, R.* Chem. Rec. 2021, 21, 3689-3726. [Link] Invited Personal Account to the Special Issue on Transition-Metal Catalysis

15. Design, Synthesis and Application of Spiro[4.5]cyclohexadienones via One-pot Sequential p-Hydroxybenzylation/Oxidative Dearomatization Patil, V. B.; Nanubolu, J. B.; Chegondi, R.* Chem. Commun. 2021, 57, 5574-5577. [Link] Invitation to the ChemComm Emerging Investigators Collection 2021

14. Organocatalytic Enantioselective Desymmetrization of Prochiral 2,2-Disubstituted Cyclic 1,3-Diones Chegondi, R.*, Patel, S. M.; Maurya, S.; Donthoju, A. Asian J. Org. Chem. 2021, 10, 1267-1281. [Link] Invited Review to the Special Issue on Organocatalysis

13. Silver(I)-Catalyzed Enyne cyclization/Aromatization of Alkyne-Tethered Cyclohexadienones to Access meta-Substituted Phenols Munakala. A.; Chegondi, R.* Org. Lett. 2021, 23, 317-323. [Link]