Jordan J. Bloomfield

Abstract: Generation des ions N-acyliminiums et syntheses de leurs precurseurs; amidoalkylations intramoleculaires avec des π-nucleophiles aromatiques; reactions de π-nucleophiles non aromatiques; utilisation des composes a methylene actif; reactions pericycliques

Abstract: I. Foreword by E. J. Corey II Introduction by K. C. Nicolaou III. Preface IV. Explanation of the Use of Colors in the Schemes and Text V. List of Abbreviations VI. List of Named Organic Reactions (this main section includes 250 two-page entries) VII. Named Organic Reactions in Alphabetical Order VIII. Appendix: Listing of the Named Reactions by Synthetic Type and by their Utility IX. References X. Index

Abstract: A comprehensive overview on homogeneous catalytic hydrogenation of carboxylic acids and its derivatives as well as carbonic acid derivatives with transition metal-based molecular catalysts is described. Despite the tremendous potential in the hydrogenation of these less electrophilic carbonyl compounds using molecular hydrogen in synthetic organic chemistry, their reduction still relies mostly on the stoichiometric use of metal hydride reagents, such as LiAlH4, NaBH4, and their derivatives. For the past decade, a significant and rapid progress in particularly ester hydrogenation has been achieved by utilization of conceptually new bifunctional molecular catalysts originating from the metal–ligand cooperation effects. The bifunctional-catalyst-promoted hydrogenation using molecular hydrogen is now realized to be a practical tool in synthetic organic chemistry in both academia and industry. The industrial outlook for the present hydrogenation is bright because of its operational simplicity, scope, economic ...

Abstract: A major factor responsible for the selectivity of chlorsulfuron [2-chloro- N -[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]benzenesulfonamide] (formerly DPX-4189), as a postemergence herbicide for small grains is the ability of the crop plants to metabolize the herbicide. Chlorsulfuron is the active ingredient in Du Pont “Glean” weed killer. Tolerant plants such as wheat, oats, and barley rapidly metabolize chlorsulfuron to a polar, inactive product. This metabolite has been characterized as the O -glycoside of chlorsulfuron in which the phenyl ring has undergone hydroxylation followed by conjugation with a carbohydrate moiety. Sensitive broadleaf plants show little or no metabolism of chlorsulfuron.

Abstract: The tridentate ligand 2,2′:6′,2″-terpyridine is becoming increasingly widely used. Appended substituent groups may be utilized to tailor the properties of its complexes. 2,2′:6′,2″-Terpyridine ligands incorporating other metal binding functionalities and multinucleating ligands incorporating two or more terpyridine moieties may be used to assemble supramolecular coordination oligomers. The synthetic strategies used to prepare 2,2′:6′,2″-terpyridine ligands are reviewed comprehensively.