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Molecules, Volume 4, Issue 7 (July 1999) – 5 articles , Pages 169-237

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Article
Bifunctional Derivative of p,p'-Dichlorochalcone. Part II. Synthesis of a Novel Compound 2-[2-Carboxymethylthio-2-(4-chlorophenyl)ethyl]-2-(4-chlorophenyl)-4-thiazolidinone
by Sayeed Mukhtar, Mujeebur V.P. Rahman, Wajid Husain Ansari, Guy Lemière, Alex De Groot and Roger Dommisse
Molecules 1999, 4(7), 232-237; https://doi.org/10.3390/40700232 - 19 Jul 1999
Cited by 22 | Viewed by 7784
Abstract
The synthesis of 2-[2-carboxymethylthio-2-(4-chlorophenyl) ethyl]-2-(4-chlorophenyl) - 4-thiazolidinone (1) from p, p'- dichlorochalcone using thioglycollic acid in the presence of ammonium carbonate is described. Structural assignment and stereochemistry are discussed. Full article
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Article
Reactivity of a-Oxophosphonium Ylides: A Contribution to the Mechanistics
by Teresa M.V.D. Pinho e Melo, António M. D’A. Rocha Gonsalves, Sara M. S. Carrapato and Ana M. O. M. P. Taborda
Molecules 1999, 4(7), 219-231; https://doi.org/10.3390/40700219 - 17 Jul 1999
Cited by 1 | Viewed by 6904
Abstract
Ylides 1f and 1g react with chlorine, with bromine and with N-chlorosuccinimide in the presence of a range of nucleophiles. The 2,3-disubstitutedbutenedioates obtained in this way allow us to gather more information about the mechanism involved. Ylide 1c was also studied showing similar [...] Read more.
Ylides 1f and 1g react with chlorine, with bromine and with N-chlorosuccinimide in the presence of a range of nucleophiles. The 2,3-disubstitutedbutenedioates obtained in this way allow us to gather more information about the mechanism involved. Ylide 1c was also studied showing similar reactivity and leading to the highly selective synthesis of 2,3-disubstituted-3-phenylpropenoates. Full article
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109 KiB  
Article
Furyl(aryl)alkanes and Their Derivatives. 19. Synthesis of Benzofuran Derivatives via 2-Hydroxyaryl-R-(5-methylfur-2-yl)methanes. Reaction of Furan Ring Opening - Benzofuran Ring Closure Type
by Andrey V. Gutnov, Alexander V. Butin, Vladimir T. Abaev, Gennadij D. Krapivin and Valerij E. Zavodnik
Molecules 1999, 4(7), 204-218; https://doi.org/10.3390/40700204 - 17 Jul 1999
Cited by 30 | Viewed by 9801
Abstract
2-Hydroxyaryl(5-methylfur-2-yl)alkanes synthesized by alkylation of 2-methylfuran with various 2-hydroxybenzylic alcohols, were rearranged into corresponding 3-R-benzo[b]furan derivatives by treatment with ethanolic HCl solution. These compounds can not be transformed into dibenzoxazulenium salts. Full article
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Other
Supramolecular Bioorganic Chemistry: Nucleic Acids Recognition and Synthetic Vectors for Gene Transfer
by Jean-Pierre Vigneron
Molecules 1999, 4(7), 180-203; https://doi.org/10.3390/40700180 - 02 Jul 1999
Cited by 2 | Viewed by 6680
Abstract
Our works on nucleic acids recognition and synthetic vectors for gene transfer have been reviewed. Full article
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57 KiB  
Review
Polyalkoxy Nitrones as Chiral Building Blocks in Asymmetric Synthesis
by Pedro Merino and Tomás Tejero
Molecules 1999, 4(7), 169-179; https://doi.org/10.3390/40700169 - 04 Jun 1999
Cited by 16 | Viewed by 9658
Abstract
Optically active nitrones derived from both aldoses and dialdoses add metallated heterocycles in a stereocontrolled way depending on the nature of the Lewis acid used as a precomplexing agent of the nitrone. Further elaborations of the resulting hydroxylamines lead to the development of [...] Read more.
Optically active nitrones derived from both aldoses and dialdoses add metallated heterocycles in a stereocontrolled way depending on the nature of the Lewis acid used as a precomplexing agent of the nitrone. Further elaborations of the resulting hydroxylamines lead to the development of new synthetic methodologies for the preparation of polyalkoxy α-amino aldehydes and α-amino acids. These compounds can be used as key advanced intermediates in the synthesis of a wide range of natural products and derivatives including amino sugars, aza sugars, and complex nucleosides. Full article
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