Reactivity of 3-Styrylchromones as Dienes in Diels—Alder Reactions under Microwave Irradiation: A New Synthesis of Xanthones.

ChemInform ◽  
2005 ◽  
Vol 36 (44) ◽  
Author(s):  
Diana C. G. A. Pinto ◽  
Artur M. S. Silva ◽  
Cristela M. Brito ◽  
Angela Sandulache ◽  
Jose R. Carrillo ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Diels Alder ◽  
New Synthesis

Reactivity of 3-Styrylchromones as Dienes in Diels-Alder Reactions under Microwave Irradiation: A New Synthesis of Xanthones

2005 ◽  
Vol 2005 (14) ◽  
pp. 2973-2986 ◽  
Author(s):  
Diana C. G. A. Pinto ◽  
Artur M. S. Silva ◽  
Cristela M. Brito ◽  
Angela Sandulache ◽  
José R. Carrillo ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Diels Alder ◽  
New Synthesis

ChemInform Abstract: New Synthesis and Diels-Alder Reactions of 2-Aminomethyl-1,3- butadienes and Related 1,3-Dienes.

ChemInform ◽  
2010 ◽  
Vol 22 (28) ◽  
pp. no-no
Author(s):  
A. HOSOMI ◽  
T. MASUNARI ◽  
Y. TOMINAGA ◽  
M. HOJO
Keyword(s):  
Diels Alder ◽  
New Synthesis

Thermal Diels–Alder Reactions of 3-(Benzoylamino)-6-(polyfluoroalkyl)pyran-2-ones – New Synthesis ofp-(Polyfluoroalkyl)anilines

2006 ◽  
Vol 2006 (20) ◽  
pp. 4704-4709 ◽  
Author(s):  
Nataliya A. Tolmachova ◽  
Igor I. Gerus ◽  
Sergey I. Vdovenko ◽  
Michael Essers ◽  
Roland Fröhlich ◽  
...  
Keyword(s):  
Diels Alder ◽  
New Synthesis

ChemInform Abstract: Diels-Alder Cycloaddition of 4,6-Dimethyl-1,2,3-triazine with Enamines, or Their Precursors, under Microwave Irradiation.

ChemInform ◽  
2010 ◽  
Vol 32 (22) ◽  
pp. no-no
Author(s):  
Angel Diaz-Ortiz ◽  
Antonio de la Hoz ◽  
Pilar Prieto ◽  
Jose R. Carrillo ◽  
Andres Moreno ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Diels Alder

Intramolecular diels-alder reaction with furan diene. A new synthesis of 11-keto steroids

1983 ◽  
Vol 24 (30) ◽  
pp. 3145-3148 ◽  
Author(s):  
Luc A Van Royen ◽  
Roelant Mijngheer ◽  
Pierre J De Clercq
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction ◽  
New Synthesis

A Facile Microwave and SnCl2 Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones

2020 ◽  
Vol 73 (12) ◽  
pp. 1176
Author(s):  
Nicholas S. O'Brien ◽  
Adam McCluskey
Keyword(s):  
Microwave Irradiation ◽  
Diels Alder ◽  
Electrophilic Addition ◽  
Pure Material ◽  
Robust Approach ◽  
Unsaturated Aldehydes ◽  
Biological Importance ◽  
High Yields ◽  
Aromatic Heterocyclic

An elegantly simple, facile, and robust approach to a scaffold of biological importance, 2,3-dihydroquinazolin-4(1H)-ones, is reported. A catalytic 1% SnCl2/microwave-mediated approach afforded access to pure material, collected by cooling and filtration after 20-min microwave irradiation at 120°C. A total of 41 analogues were prepared in isolated yields of 17–99%. This process was highly tolerant of aliphatic, aromatic, heterocyclic, and acyclic aldehydes, but furan, pyrrole, and thiophene aldehyde reactivity correlated with propensity towards electrophilic addition and/or Diels–Alder addition. As a result, thiophene afforded high yields (80%) whereas pyrrole carboxaldehyde failed to react. With simple cinnamaldehydes, and in the SbCl3-mediated reaction, and with α,β-unsaturated aldehydes the equivalent quinazolin-4(3H)-ones, and not the 2,3-dihydroquinazolin-4(1H)-ones, was favoured.

Synthesis of New 1H-Indazoles through Diels-Alder Transformations of 4-Styrylpyrazoles under Microwave Irradiation Conditions

2009 ◽  
Vol 2009 (26) ◽  
pp. 4468-4479 ◽  
Author(s):  
Vera L. M. Silva ◽  
Artur M. S. Silva ◽  
Diana C. G. A. Pinto ◽  
José Elguero ◽  
José A. S. Cavaleiro
Keyword(s):  
Microwave Irradiation ◽  
Diels Alder
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