Results 31 to 40 of about 388 (112)

Palladium(II) Catalyzed C–H Functionalization Cascades for the Diastereoselective Synthesis of Polyheterocycles [PDF]

open access: yes, 2016
C−H activation offers huge potential in the generation of complex structures from simple starting materials. Herein we report the development of a highly diastereoselective palladium(II) catalyzed C−H functionalization cascade to produce novel ...
Watt, Michael   +3 more
core   +1 more source

Catalytic Enantioselective Functionalization of Maleimides: An Update

open access: yesChinese Journal of Chemistry, Volume 42, Issue 24, Page 3605-3622, 15 December 2024.
Maleimides are multisite‐reactive scaffolds that have stimulated a growing interest in the field of synthetic organic chemistry. The present review covers the utilization of maleimides as electrophilic partners and pro‐nucleophilic partners in metal‐catalyzed or organocatalyzed functionalizations with the control of either central and/or axial ...
Muriel Amatore   +3 more
wiley   +1 more source

1,2‐Diaza‐1,3‐Dienes as a Multifaceted Synthons for the Synthesis of Heterocycles: A Fifteen‐Years Update

open access: yesEuropean Journal of Organic Chemistry, Volume 27, Issue 44, November 25, 2024.
1,2‐Diaza‐1,3‐butadienes, also called azoalkenes, have received considerable attention as key synthons for constructing various heterocyclic scaffolds. This minireview summarizes the contribution of our group in this field over the period from 2009 to the present, focusing on the role of the azoene building block in forming the heterocyclic structures.
Lucia De Crescentini   +4 more
wiley   +1 more source

Multicomponent domino process to oxa-bridged polyheterocycles and pyrrolopyridines, structural diversity derived from work-up procedure

open access: yes
Novel three-component domino processes to polyheterocycles are developed. Reaction of an allylamine, an aldehyde and an alpha -isocyanoacetamide in methanol at room temp. provides an efficient access to an oxa-bridged tricycle as a single diastereoisomer.
Gamez-Montano, Rocio   +3 more
core   +1 more source

Construction of N‑Polyheterocycles by N‑Heterocyclic Carbene Catalysis via a Regioselective Intramolecular Radical Addition/Cyclization Cascade

open access: yes, 2022
N-Polyheterocycles are rapidly accessed by N-heterocyclic carbene (NHC) catalysis through regioselective sequential radical addition/cyclization in the absence of any metals or oxidants.
Qijing Zhang (293842)   +3 more
core   +1 more source

Metal-free regioselective tandem synthesis of diversely substituted benzimidazo-fused polyheterocycles in aqueous medium

open access: yes, 2016
An operationally simple approach for the synthesis of diversely substituted benzimidazo-fused polyheterocycles under metal-free conditions in water has been described.
Verma, A. K., Mishra, P. K.
core   +1 more source

Systematic Photoassisted Access to Designer Polyheterocycles via Modular Blocks and Scaffolding

open access: yes
Diverse polyheterocycles are accessed via scaffolded photoassisted synthesis involving decarboxylative aromatization of the primary photoproducts from intramolecular cycloadditions of azaxylylenes and tethered heteroaromatic unsaturated ...
Andrei G. Kutateladze (1344246)   +2 more
core   +1 more source

Photoassisted Synthesis of Complex Polyheterocycles via ESIPT-Driven Dearomative Intramolecular Cycloadditions [PDF]

open access: yes, 2019
This research is focused on the development of novel photoassisted synthetic methodologies that provide straightforward access to complex and diverse libraries of polyheterocycles from modularly assembled precursors.
Kuznetsov, Dmitry
core   +1 more source

Cationic Gold(I)-Catalyzed Cascade Bicyclizations for Divergent Synthesis of (Spiro)polyheterocycles

open access: yes, 2018
We herein report an expeditious synthetic strategy to access diverse (spiro)­polyheterocycles from easily available starting materials in two operational steps including an Ugi four-component reaction and a cationic gold­(I)-catalyzed cascade ...
Luc Van Meervelt (1501579)   +4 more
core   +2 more sources

Thermal and Photoinduced Radical Cascade Annulation using Aryl Isonitriles: An Approach to Quinoline‐Derived Benzophosphole Oxides

open access: yesAngewandte Chemie International Edition, Volume 63, Issue 30, July 22, 2024.
The synthesis of quinoline‐based benzophosphole oxides from ortho‐alkynylated aromatic phosphine oxides and aryl isonitriles is presented. These π‐extended benzophosphole oxides exhibit interesting photophysical and electrochemical properties. Abstract Herein, we present a radical cascade addition cyclization sequence to access quinoline‐based ...
Shyam Kumar Banjare   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy