Application of ring-rearrangement metathesis in organic synthesis: A grand design

S Kotha, M Meshram, VR Aswar - Tetrahedron Letters, 2019 - Elsevier
In this report, we compiled various strategies involving a ring-rearrangement metathesis as a
key step to assemble diverse molecules. Popular name reactions such as Grignard reaction …

Modular approaches to cyclopentanoids and their heteroanalogs

S Kotha, Y Tangella - Synlett, 2020 - thieme-connect.com
Cyclopentanoids and their derivatives are interesting targets in synthetic organic chemistry
due to their extensive applications in various branches of chemical sciences like …

[HTML][HTML] Triquinane Based Natural Products via Cycloadditions and Metathesis

SR Cheekatla - Tetrahedron Chem, 2024 - Elsevier
Triquinane natural products are an interesting class of polycyclic frameworks that have
attracted considerable interest because of their distinct structures and diverse array of …

Synthesis of polycycles and oxacycles via tandem metathesis of endo-norbornene derivatives

S Kotha, S Pulletikurti, A Fatma, G Dhangar… - Synthesis, 2021 - thieme-connect.com
Here, we have demonstrated that the presence of a carbonyl group at C7 position prevents
the olefin metathesis of endo-norbornene derivatives due to complexation of the metal …

Application of New Efficient Hoveyda–Grubbs Catalysts Comprising an N→Ru Coordinate Bond in a Six-Membered Ring for the Synthesis of Natural Product-Like Cyclopenta[b] …

AS Antonova, MA Vinokurova, PA Kumandin… - Molecules, 2020 - mdpi.com
The ring rearrangement metathesis (RRM) of a trans-cis diastereomer mixture of methyl 3-
allyl-3a, 6-epoxyisoindole-7-carboxylates derived from cheap, accessible and renewable …

Ring‐Rearrangement Metathesis Approach to Fused [5/5/6/5/5] and [6/5/5/5/5/6] Carbocyclic Derivatives.

S Kotha, UN Chaurasia, K Jena - ChemistrySelect, 2023 - Wiley Online Library
Here, we have developed a simple synthetic approach towards synthesis of [5/6/5] and
[5/5/5] fused carbocyclic frameworks from bis‐adducts of norbornadiene and …

Selectivity: A Goal for Synthetic Economy

S Kotha, S Ansari, NK Gupta - Synlett, 2023 - thieme-connect.com
Chemical reactivity plays a major role in understanding several aspects of selectivity.
Therefore, in this account, we present a plethora of reactions that demonstrate our efforts in …

N-Acyliminium Ion Chemistry: Improving the Access to Unsaturated γ-Lactams and Their N-α-Methoxylated Derivatives: Application to an Expeditive Synthesis of (±) …

F Souquet, W Drici, S Abi Fayssal, I Lazouni… - …, 2020 - thieme-connect.com
An improved synthesis of unsaturated γ-lactams by condensation of various primary amines
with 2, 5-dimethoxy-2, 5-dihydrofuran is described. A modified mechanism for this reaction is …

Application of Sequential Ring‐Opening, and Ring‐Closing Metathesis or Ring‐Rearrangement Metathesis to Design Oxacycles and Azacycles

S Kotha, A Fatma - ChemistrySelect, 2021 - Wiley Online Library
We report a concise and simple synthetic approach to oxacycles, azacycles and aza‐
propellanes starting with endo/exo‐nadic anhydride via olefin metathesis as a key step. This …

Synthesis of spiro-annulated cyclobutane derivatives through ketene [2+ 2] cycloaddition and ring-rearrangement metathesis

S Kotha, S Pulletikurti - 2020 - nopr.niscpr.res.in
Herein is reported a concise synthesis of spiro-annulated cyclobutane tetracyclic and
pentacyclic derivatives by ketene addition, and ring-rearrangement metathesis (RRM) as …