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

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Research

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Open AccessArticle 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
Molecules 1999, 4(7), 204-218; doi:10.3390/40700204
Received: 6 June 1999 / Accepted: 28 June 1999 / Published: 17 July 1999
Cited by 13 | PDF Full-text (109 KB)
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
Open AccessArticle Reactivity of a-Oxophosphonium Ylides: A Contribution to the Mechanistics
Molecules 1999, 4(7), 219-231; doi:10.3390/40700219
Received: 9 June 1999 / Accepted: 29 June 1999 / Published: 17 July 1999
Cited by 1 | PDF Full-text (48 KB)
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
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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
Open AccessArticle 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
Molecules 1999, 4(7), 232-237; doi:10.3390/40700232
Received: 3 March 1999 / Accepted: 10 June 1999 / Published: 19 July 1999
Cited by 8 | PDF Full-text (25 KB)
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

Review

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Open AccessReview Polyalkoxy Nitrones as Chiral Building Blocks in Asymmetric Synthesis
Molecules 1999, 4(7), 169-179; doi:10.3390/40700169
Received: 23 December 1998 / Revised: 20 March 1999 / Accepted: 29 May 1999 / Published: 4 June 1999
Cited by 11 | PDF Full-text (57 KB)
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

Other

Jump to: Research, Review

Open AccessOther Supramolecular Bioorganic Chemistry: Nucleic Acids Recognition and Synthetic Vectors for Gene Transfer
Molecules 1999, 4(7), 180-203; doi:10.3390/40700180
Received: 7 June 1999 / Accepted: 9 July 1999 / Published: 2 July 1999
PDF Full-text (340 KB)
Abstract Our works on nucleic acids recognition and synthetic vectors for gene transfer have been reviewed. Full article

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