ChemInform Abstract: Organocatalytic Asymmetric Synthesis of Tetracyclic Pyridocarbazole Derivatives by Using a Diels-Alder/Aza-Michael/Aldol Condensation Domino Reaction.

ChemInform ◽  
2014 ◽  
Vol 45 (3) ◽  
pp. no-no
Author(s):  
Dieter Enders ◽  
Celine Joie ◽  
Kristina Deckers
Keyword(s):  
Asymmetric Synthesis ◽  
Aldol Condensation ◽  
Diels Alder ◽  
Domino Reaction

scholarly journals A Merged Aldol Condensation, Alkene Isomerization, Cycloaddition/Cycloreversion Sequence Employing Oxazinone Intermediates for the Synthesis of Substituted Pyridines

Synlett ◽  
2017 ◽  
Vol 28 (10) ◽  
pp. 1170-1172 ◽  
Author(s):  
Jonathan Scheerer ◽  
Jill Williamson ◽  
Emily Smith
Keyword(s):  
Aldol Condensation ◽  
Reaction Vessel ◽  
Diels Alder ◽  
Domino Reaction ◽  
Reaction Sequence ◽  
Alkene Isomerization ◽  
Substituted Pyridines

A domino reaction sequence has been evaluated that begins with union of novel dihydrooxazinone precursors with 2-alkynyl-substituted benzaldehyde components through aldol condensation. Ensuing operations, including alkene isomerization, Diels–Alder, and retrograde Diels–Alder with loss of CO2 occurs in the same reaction vessel to provide polysubstituted tricyclic pyridine products.

Asymmetric Synthesis of Fused Tetrahydroquinolines via Intramolecular Aza-Diels-Alder Reaction of ortho-Quinone Methide Imines

Synthesis ◽  
2021 ◽  
Author(s):  
Fabian Hofmann ◽  
Cornelius Gärtner ◽  
Martin Kretzschmar ◽  
Christoph Schneider
Keyword(s):  
Asymmetric Synthesis ◽  
Alder Reaction ◽  
Single Step ◽  
Diels Alder ◽  
Quinone Methide ◽  
Bronsted Acid ◽  
Atom Economy ◽  
Diels Alder Reaction ◽  
Brönsted Acid ◽  
Chiral Bronsted Acid

Aza-Diels Alder reactions are straightforward processes in the construction of N-heterocycles, featuring inherent atom-economy and stereospecificity. Intramolecular strategies allow formation of bicyclic core structures with up to three stereocenters within a single step. Herein, this concept is combined with the chemistry of chiral Brønsted acid-bound ortho-quinone methide imines generating a range of interesting fused tetrahydro-quinolines in a diastereo- and enantioselective manner.

Transition metal-free approach to azafluoranthene scaffolds by aldol condensation/[1+2+3] annulation tandem reaction of isocyanoacetates with 8-(alkynyl)-1-naphthaldehydes

2021 ◽  
Author(s):  
Penghui Dong ◽  
Kashif Majeed ◽  
lingna Wang ◽  
Zijian Guo ◽  
Fengtao Zhou ◽  
...  
Keyword(s):  
Transition Metal ◽  
Aldol Condensation ◽  
Domino Reaction ◽  
Tandem Reaction ◽  
Metal Free ◽  
Successive Formation ◽  
General Synthesis

A transition metal-free aldol condensation/[1+2+3] annulation reaction of isocyanoacetates with 8-(alkynyl)-1-naphthaldehydes has been developed for the general synthesis of azafluoranthenes. This domino reaction enables successive formation of three new bonds...

scholarly journals Enantioselective Organocatalytic Intramolecular Diels—Alder Reactions. The Asymmetric Synthesis of Solanapyrone D.

ChemInform ◽  
2005 ◽  
Vol 36 (52) ◽  
Author(s):  
Rebecca M. Wilson ◽  
Wendy S. Jen ◽  
David W. C. MacMillan
Keyword(s):  
Asymmetric Synthesis ◽  
Diels Alder

Asymmetric synthesis of N-phenylethyl-2-phenyldecahydroquinolin-4-ones via Lewis acid catalyzed imino-Diels–Alder reaction

2000 ◽  
Vol 11 (12) ◽  
pp. 2509-2523 ◽  
Author(s):  
Renée Paugam ◽  
Emmanuelle Valenciennes ◽  
Linda Le Coz-Bardol ◽  
Jean-Christophe Garde ◽  
Lya Wartski ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Lewis Acid ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction ◽  
Acid Catalyzed

Asymmetric synthesis of isoquinuclidines by Diels–Alder reaction of 1,2-dihydropyridine utilizing a chiral Lewis acid catalyst

Tetrahedron ◽  
2012 ◽  
Vol 68 (6) ◽  
pp. 1774-1781 ◽  
Author(s):  
Chigusa Seki ◽  
Masafumi Hirama ◽  
N.D.M. Romauli Hutabarat ◽  
Junko Takada ◽  
Chonticha Suttibut ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Lewis Acid ◽  
Acid Catalyst ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction ◽  
Chiral Lewis Acid ◽  
Lewis Acid Catalyst

ChemInform Abstract: Studies in Asymmetric Synthesis. Part 4. Studies in Lewis Acid and LiClO4 (or Nafion-H) Catalyzed Ionic Diels-Alder Reactions of Chiral and Achiral Olefinic Acetals Respectively.

ChemInform ◽  
2010 ◽  
Vol 30 (27) ◽  
pp. no-no
Author(s):  
R. Kumareswaran ◽  
Padma S. Vankar ◽  
M. Venkat Ram Reddy ◽  
Sangeeta V. Pitre ◽  
Raja Roy ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Lewis Acid ◽  
Diels Alder
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