Generation of heterocyclic quinone methides from ortho-hydroxy methyl derivatives and a study of their cycloaddition reactions

1988 ◽  
pp. 527 ◽  
Author(s):  
Marek A. Chauncey ◽  
Michael F. Grundon ◽  
Mary J. Rutherford
Keyword(s):  
Cycloaddition Reactions ◽  
Quinone Methides ◽  
Heterocyclic Quinone ◽  
Methyl Derivatives

A New Cycloaddition Profile for ortho-Quinone Methides: Photoredox-Catalyzed [6+4] Cycloadditions for Synthesis of Benzo[b]cyclopenta[e]oxepines

2022 ◽  
Author(s):  
Kenta Tanaka ◽  
Yosuke Asada ◽  
Yujiro Hoshino
Keyword(s):  
Visible Light ◽  
Cycloaddition Reactions ◽  
Quinone Methides

Visible-light-induced [6+4] cycloaddition reactions of ortho-quinone methides have been developed. The reaction of ortho-quinone methides with pentafulvenes in the presence of a thioxanthylium photoredox catalyst afforded benzo[b]cyclopenta[e]oxepines. The present reaction...

Chemoselective acid-catalyzed [4 + 2]-cycloaddition reactions of ortho-quinone methides and styrenes/stilbenes/cinnamates

2020 ◽  
Vol 18 (43) ◽  
pp. 8854-8866
Author(s):  
Kornkamon Akkarasereenon ◽  
Kassrin Tangdenpaisal ◽  
Somsak Ruchirawat ◽  
Poonsakdi Ploypradith
Keyword(s):  
Cycloaddition Reactions ◽  
Quinone Methides ◽  
Acid Catalyzed

Chemoselective [4 + 2]-cycloaddition reactions between o-QMs and different olefins—styrenes, stilbenes, and cinnamates—yielded distinct cycloadducts in moderate to good yields.

1,3-Dipolar Cycloaddition Reactions of Benzonitrile Oxide to 2(1H )-Pyrazinone and Its N - and O - Methyl Derivatives

Heterocycles ◽  
2000 ◽  
Vol 53 (1) ◽  
pp. 69 ◽  
Author(s):  
Antonino Corsaro ◽  
Ugo Chiacchio ◽  
Venerando Pistarà ◽  
Giancarlo Perrini
Keyword(s):  
Dipolar Cycloaddition ◽  
Cycloaddition Reactions ◽  
Methyl Derivatives

Reactions of Heterocyclic Quinone Methides: A Facile Entry to Synthesize the Alkaloid, Flindersine and Its Analogues.

ChemInform ◽  
2003 ◽  
Vol 34 (16) ◽  
Author(s):  
R. Nandha Kumar ◽  
S. Thamarai Selvi ◽  
T. Suresh ◽  
P. S. Mohan
Keyword(s):  
Quinone Methides ◽  
Heterocyclic Quinone

scholarly journals Mannich base-connected syntheses mediated by ortho-quinone methides

2018 ◽  
Vol 14 ◽  
pp. 560-575 ◽  
Author(s):  
Petra Barta ◽  
Ferenc Fülöp ◽  
István Szatmári
Keyword(s):  
Biological Activity ◽  
Mannich Base ◽  
Quinone Methide ◽  
Cycloaddition Reactions ◽  
Quinone Methides ◽  
Pharmacological Activities ◽  
Mannich Reactions

This article provides an overview about specifically modified Mannich reactions where the process involves an ortho-quinone methide (o-QM) intermediate. The reactions are classified on the basis of the o-QM source followed by the reactant, e.g., the dienophile partner in cycloaddition reactions (C=C or C=N dienophiles) or by the formation of multicomponent Mannich adducts. Due to the important pharmacological activities of these reactive o-QM intermediates, special attention is paid to the biological activity of these compounds.

-quinone methides 2. Stereoselectivity in cycloaddition reactions of -quinone methides with vinyl ethers

Tetrahedron ◽  
1985 ◽  
Vol 41 (15) ◽  
pp. 3095-3103 ◽  
Author(s):  
Arturo Arduini ◽  
Anna Bosi ◽  
Andrea Pochini ◽  
Rocco Ungaro
Keyword(s):  
Cycloaddition Reactions ◽  
Vinyl Ethers ◽  
Quinone Methides

ChemInform Abstract: Pt(IV)-Catalyzed Generation and [4 + 2]-Cycloaddition Reactions of o-Quinone Methides.

ChemInform ◽  
2011 ◽  
Vol 42 (41) ◽  
pp. no-no
Author(s):  
Suttipol Radomkit ◽  
Pakornwit Sarnpitak ◽  
Jumreang Tummatorn ◽  
Paratchata Batsomboon ◽  
Somsak Ruchirawat ◽  
...  
Keyword(s):  
Cycloaddition Reactions ◽  
Quinone Methides
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