Tandem (2 + 2) Annulation/Retro-4π Electrocyclization/Imino-Nazarov Cyclization Reaction of p-Quinone Methides with Ynamides: Expeditious Construction of Functionalized Aminoindenes

2021 ◽  
Author(s):  
Ke-Yin Yu ◽  
Yu-Hua Deng ◽  
Xiao-Min Ge ◽  
Xian-Tao An ◽  
Peng-Fei Shu ◽  
...  
Keyword(s):  
Cyclization Reaction ◽  
Nazarov Cyclization ◽  
Quinone Methides

Synthesis of 4-styrylcoumarins via FeCl3-promoted cascade reactions of propargylamines with β-keto esters

2019 ◽  
Vol 17 (16) ◽  
pp. 4005-4013 ◽  
Author(s):  
Li-Qin Yan ◽  
Xiaoting Cai ◽  
Xinwei He ◽  
Hui Wang ◽  
Mengqing Xie ◽  
...  
Keyword(s):  
Cascade Reactions ◽  
Cyclization Reaction ◽  
Quinone Methides ◽  
Keto Esters ◽  
Tandem Cyclization

A versatile and highly regioselective FeCl3-promoted tandem cyclization reaction of in situ generated alkynyl o-quinone methides (o-AQMs) with β-keto esters has been developed.

scholarly journals A Highly Reactive Dicationic Iridium(III) Catalyst for the Polarized Nazarov Cyclization Reaction

2010 ◽  
Vol 49 (19) ◽  
pp. 3363-3366 ◽  
Author(s):  
Tulaza Vaidya ◽  
Abdurrahman C. Atesin ◽  
Ildiko R. Herrick ◽  
Alison J. Frontier ◽  
Richard Eisenberg
Keyword(s):  
Cyclization Reaction ◽  
Nazarov Cyclization

scholarly journals A formal intermolecular [4 + 1] cycloaddition reaction of 3-chlorooxindole and o-quinone methides: a facile synthesis of spirocyclic oxindole scaffolds

RSC Advances ◽  
2021 ◽  
Vol 11 (30) ◽  
pp. 18576-18579
Author(s):  
Chao Lin ◽  
Qi Xing ◽  
Honglei Xie
Keyword(s):  
Cycloaddition Reaction ◽  
Cyclization Reaction ◽  
Facile Synthesis ◽  
Quinone Methides ◽  
Rapid Synthesis ◽  
Mild Conditions ◽  
Straightforward Method ◽  
Spirocyclic Oxindole

Herein, we developed an efficient and straightforward method for the rapid synthesis of spirocyclic oxindole scaffolds via the [4 + 1] cyclization reaction of 3-chlorooxindole with o-quinone methides (o-QMs), which were generated under mild conditions.

A Cr(salen)-based metal–organic framework as a versatile catalyst for efficient asymmetric transformations

2016 ◽  
Vol 52 (89) ◽  
pp. 13167-13170 ◽  
Author(s):  
Qingchun Xia ◽  
Yan Liu ◽  
Zijian Li ◽  
Wei Gong ◽  
Yong Cui
Keyword(s):  
Heterogeneous Catalyst ◽  
Metal Organic Framework ◽  
Diels Alder ◽  
Cyclization Reaction ◽  
Nazarov Cyclization ◽  
Asymmetric Transformations ◽  
Metal Organic ◽  
Organic Framework

A novel Cr(salen)-based metal–organic framework (MOF) is constructed, which is shown to be a versatile heterogeneous catalyst for a series of important asymmetric transformations including Nazarov cyclization reaction, aminolysis reaction, Diels–Alder and hetero Diels–Alder reactions with the highest ee up to 99%.

ChemInform Abstract: A Highly Reactive Dicationic Iridium(III) Catalyst for the Polarized Nazarov Cyclization Reaction.

ChemInform ◽  
2010 ◽  
Vol 41 (36) ◽  
pp. no-no ◽  
Author(s):  
Tulaza Vaidya ◽  
Abdurrahman C. Atesin ◽  
Ildiko R. Herrick ◽  
Alison J. Frontier ◽  
Richard Eisenberg
Keyword(s):  
Cyclization Reaction ◽  
Nazarov Cyclization

A Highly Reactive Dicationic Iridium(III) Catalyst for the Polarized Nazarov Cyclization Reaction

2010 ◽  
Vol 122 (19) ◽  
pp. 3435-3438 ◽  
Author(s):  
Tulaza Vaidya ◽  
Abdurrahman C. Atesin ◽  
Ildiko R. Herrick ◽  
Alison J. Frontier ◽  
Richard Eisenberg
Keyword(s):  
Cyclization Reaction ◽  
Nazarov Cyclization

1,6-Addition of vinyl p-quinone methides with cyclic sulfamidate imines: access to 4-hydroxyaryl-2,6-diarylpyridines

2020 ◽  
Vol 18 (7) ◽  
pp. 1337-1342 ◽  
Author(s):  
Soumitra Guin ◽  
Santosh K. Gudimella ◽  
Sampak Samanta
Keyword(s):  
Cyclization Reaction ◽  
Quinone Methides ◽  
Open Atmosphere ◽  
High Yields

A base-promoted 1,6-addition–cyclization reaction of vinyl para-quinone methides with cyclic sulfamidate imines in an open atmosphere is reported. This method delivers good to high yields of 2,4,6-trisubstituted pyridines with a valuable phenolic moiety at the C4-position.

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