Expeditious entry into carbocyclic and heterocyclic spirooxindoles

M Ganesh, S Suraj - Organic & Biomolecular Chemistry, 2022 - pubs.rsc.org
Spirocyclic frameworks have attracted synthetic practitioners due to their unique three-
dimensional assembly, improved metabolic stability, solubility, and increased molecular …

Recent advances of chromone-based reactants in the catalytic asymmetric domino annulation reaction

M Zhang, Y Gong, W Zhou, Y Zhou… - Organic Chemistry …, 2021 - pubs.rsc.org
Chiral polycyclic chromanones are important heterocyclic frameworks that constitute the
core structures of many natural products and bioactive molecules. As starting materials, the …

Stereoselective domino reactions in the synthesis of spiro compounds

R Westphal, E Venturini Filho, F Medici, M Benaglia… - …, 2022 - thieme-connect.com
This review summarizes the latest developments in asymmetric domino reactions, with the
emphasis on the preparation of spiro compounds. Discussions on the stereoselectivity of the …

Green synthesis of spiro compounds with potential anticancer activity through Knoevenagel/Michael/cyclization multicomponent domino reactions organocatalyzed by …

R Westphal, E Venturini Filho, LB Loureiro… - Molecules, 2022 - mdpi.com
In this work a microwave-assisted Knoevenagel/Michael/cyclization multicomponent domino
methodology, using ethanol as solvent and the ionic liquid 1-methylimidazolium chloride as …

Further developments of β, γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis

R Deng, TJ Han, X Gao, YF Yang, GJ Mei - Iscience, 2022 - cell.com
Summary β, γ-Unsaturated α-ketoesters prove to be versatile organic synthons participating
in diverse catalytic asymmetric transformations with the breathtaking development of organo …

Lewis Acid‐Catalyzed (3+ 2) Cycloaddition of 2‐Indolylmethanols with β, γ‐Unsaturated α‐Ketoesters

S Yang, HQ Wang, JN Gao, WX Tan… - European Journal of …, 2022 - Wiley Online Library
Abstract A Lewis acid‐catalyzed (3+ 2) cycloaddition of 2‐indolylmethanols with β, γ‐
unsaturated α‐ketoesters was established, which afforded a series of cyclopenta [b] indoles …

Enantioselective Synthesis of Nonfused Eight-Membered O-Heterocycles by Sequential Catalysis

SS Qi, XP Sun, YB Sun, JJ Zhai, YF Wang, SJ Lou… - Organic …, 2024 - ACS Publications
This work describes a chiral bifunctional squaramide/DBU sequential catalytic strategy for
the enantioselective synthesis of nonfused chiral eight-membered O-heterocycles through …

Highly diastereoselective synthesis of trifluoromethyl containing spiro [pyrrolidin-3, 2′-oxindoles] from N-2, 2, 2-trifluoroethylsubstituted isatin imines and β, γ …

Y Xiong, XX Han, Y Lu, HJ Wang, M Zhang, XW Liu - Tetrahedron, 2021 - Elsevier
Inspired by the chemistry and biology of fluorine-containing molecules and pyrrolidinyl
spirooxindoles, herein we report a highly diastereoselective [3+ 2] cycloaddition reaction of …

The Asymmetric Synthesis of Polycyclic Tetrahydroxanthone via the Cascade Reaction of Alkene‐Substituted 1, 3‐diketones and Alkenyloxindoles

R Zhang, W Wang, Y Zhang, Y Chen… - Advanced Synthesis …, 2024 - Wiley Online Library
Enantioselective access to polycyclic tetrahydroxanthone compounds was achieved through
an organocatalyzed cascade reaction of alkene‐substituted 1, 3‐diketones and …

Transition-metal-free cascade benzannulations for synthesizing 2-hydroxybenzophenones

XW He, W Zhou, M Zhang, MY Tian, HJ Wang… - Organic & …, 2020 - pubs.rsc.org
A set of cascade benzannulations of readily accessible chromone-3-carboxaldehydes and γ-
nitroaldehydes for synthesizing biologically relevant 2-hydroxybenzophenones has been …