One‐Pot Generation of Bicyclo [3.1. 0] hexanols and Cyclohexanones by Double Interrupted Nazarov Reactions

S Gelozia, Y Kwon, R McDonald… - Chemistry–A European …, 2018 - Wiley Online Library
Organoaluminum‐mediated double interrupted Nazarov cyclization to access bicyclo [3.1. 0]
hexanols via nucleophilic methyl attack followed by Simmons–Smith‐type electrophilic …

Organoaluminum Mediated Interrupted Nazarov Reaction

Y Kwon - 2015 - era.library.ualberta.ca
Five-membered carbocycles are highly prevalent motifs in natural products and
pharmaceutical drugs. Finding routes towards these moieties has been an attractive area of …

Organocatalytic asymmetric tandem Nazarov cyclization/semipinacol rearrangement: rapid construction of chiral spiro [4.4] nonane-1, 6-diones

BM Yang, PJ Cai, YQ Tu, ZX Yu, ZM Chen… - Journal of the …, 2015 - ACS Publications
A novel organocatalytic asymmetric tandem Nazarov cyclization/semipinacol rearrangement
reaction using “unactivated” substrates has been developed, generating a series of chiral …

Nazarov-like cyclization reactions

MJ Di Grandi - Organic & Biomolecular Chemistry, 2014 - pubs.rsc.org
The Nazarov cyclization, a well-known method for the formation of cyclopentenones,
mechanistically involves the 4π electrocyclization of a 1, 4-pentadienyl cation, generated …

Brønsted Acid-Catalyzed Cascade Ring-Opening/Cyclization of 3-Ethoxy Cyclobutanones to Access 2, 8-Dioxabicyclo [3.3. 1] nonane Derivatives

A Hazra, T Kanji, P Banerjee - The Journal of Organic Chemistry, 2024 - ACS Publications
A cascade ring opening of 3-ethoxy cyclobutanones followed by a double cyclization
strategy has been developed via Brønsted acid catalysis. A range of 2, 8-dioxabicyclo [3.3 …

Oxa-Nazarov Cyclization-Michael Addition Sequence for the Rapid Construction of Dihydrofuranones

T Chen, F Gong, S Nagaraju, J Liu, S Yang… - Organic …, 2022 - ACS Publications
The Nazarov cyclization has been established as a powerful tool in constructing
cyclopentenone skeletons. In sharp contrast, oxa-Nazarov cyclization that affords …

[PDF][PDF] One‐Pot Tandem Catalysis: A Concise Route to Fused Bicyclic Scaffolds from Acyclic β‐Ketoesters and Alkynyl Aldehydes

L Liu, L Wei, Y Lu, J Zhang - Chemistry–A European Journal, 2010 - academia.edu
The fused bicyclic skeleton is an important subunit in many natural products,
pharmaceuticals, and organic building blocks in organic synthesis (some examples are …

Interrupting the Nazarov cyclization with bromine

DJ Schatz, Y Kwon, TW Scully… - The Journal of Organic …, 2016 - ACS Publications
The generation of dibrominated cyclopentenones via an interrupted Nazarov cyclization is
reported. The installation of two bromine atoms occurs at the α and α′ positions of the …

A Fused Hexacyclic Ring System: Diastereoselective Polycyclization of 2, 4‐Dienals through an Interrupted iso‐Nazarov Reaction

AS Marques, T Duhail, J Marrot… - Angewandte …, 2019 - Wiley Online Library
We report an unprecedented domino polycyclization from readily available 2, 4‐dienals and
cyclic α, β‐unsaturated imines that is initiated by an iso‐Nazarov reaction. This Brønsted …

α-Hydroxycyclopentanones via one-pot oxidation of the trimethylaluminum-mediated Nazarov reaction with triplet oxygen

Y Kwon, O Scadeng, R McDonald… - Chemical …, 2014 - pubs.rsc.org
Trimethylaluminum and molecular oxygen are used in tandem to interrupt the Nazarov
cyclization. α-Hydroxycyclopentanones are produced in moderate to good yield as a mixture …