Encoding and decoding hydrogen-bond patterns of organic compounds

1. Advantages of Chemical Redox Agents 878 2. Disadvantages of Chemical Redox Agents 879 C. Potentials in Nonaqueous Solvents 879 D. Reversible vs Irreversible ET Reagents 879 E. Categorization of Reagent Strength 881 II. Oxidants 881 A. Inorganic 881 1. Metal and Metal Complex Oxidants 881 2. Main Group Oxidants 887 B. Organic 891 1. Radical Cations 891 2. Carbocations 893 3. Cyanocarbons and Related Electron-Rich Compounds 894

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Chemical Redox Agents for Organometallic Chemistry

N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry. They not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine. Because of their specific coordination chemistry, N-heterocyclic carbenes both stabilize and activate metal centers in quite different key catalytic steps of organic syntheses, for example, C-H activation, C-C, C-H, C-O, and C-N bond formation. There is now ample evidence that in the new generation of organometallic catalysts the established ligand class of organophosphanes will be supplemented and, in part, replaced by N-heterocyclic carbenes. Over the past few years, this chemistry has been the field of vivid scientific competition, and yielded previously unexpected successes in key areas of homogeneous catalysis. From the work in numerous academic laboratories and in industry, a revolutionary turning point in oraganometallic catalysis is emerging.

http://aether.cmi.ua.ac.be/artikels/Artikels%20Gitte/Artikels/Reviews/NHC-%20liganden%20Herrmann.pdf

N-heterocyclic carbenes: a new concept in organometallic catalysis.

s, or keywords if they used Heck-type chemistry in their syntheses, because it became one of basic tools of organic preparations, a natural way to

http://aether.cmi.ua.ac.be/artikels/Artikels%20Gitte/Artikels/Reviews/Heck%20reactie%20Beletskaya%20%20Chem.%20Rev.%20003009.pdf

The heck reaction as a sharpening stone of palladium catalysis.

/pdf/aryl-aryl-bond-formation-one-century-after-the-discovery-of-1jdyxlkwix.pdf

Aryl-aryl bond formation one century after the discovery of the Ullmann reaction.

Molecular engineering of solid-state materials: organometallic building blocks

Palladium-catalyzed alkylations in aqueous media

This account describes the author's work on the attachment of metal complexes directly to the exterior of the C[sub 60] framework via solution chemistry forming metal-C[sub 60] bonds. Ruthenium, platinum, palladium, and nickel complexes are discussed.

Metal complexes of buckminsterfullerene (C60)

Co(HB[t-butyl-3 pyrazolyl-1] 3 )(NCS) et Co(HB[phenyl-3 pyrazolyl-1] 3 )(NCS)(THF) cristallisent dans le systeme monoclinique avec le groupe d'espace P2 1 /n. Affinement des structures jusqu'a 0,042 et 0,043 respectivement. La coordination autour de Co(II) dans le premier complexe est tetraedrique. Dans le second complexe, elle est bipyramidale rhomboedrique

Novel polypyrazolylborate ligands: coordination control through 3-substituents of the pyrazole ring

The reaction of zirconium metallacycles is used to produce a variety of main group heterocycles including borole Diels-Alder dimers, galloles, indacyclopentadienes, siloles, germoles, stannoles, phospholes, arsoles, stiboles, bismoles, thiophenes, selenophenes, dihydrothiophenes, dihydroselenophenes, tetrahydrothiophenes, tetrahydroselenophenes, stannacyclopentanes, phospholenes, and isothiazoles. An X-ray crytallographic study of the borole Diels-Alder dimer of 1-phenyl-2,3,4,5-tetramethylborole is discussed and compared with the structure of 7-norbornenyl carbenium ions. The scope and potential for this metallacycle transfer reaction are delineated

Joseph C. Calabrese

Papers

Molecular engineering of solid-state materials: organometallic building blocks

Palladium-catalyzed alkylations in aqueous media

Metal complexes of buckminsterfullerene (C60)

Novel polypyrazolylborate ligands: coordination control through 3-substituents of the pyrazole ring

Metallacycle Transfer from Zirconium to Main Group Elements: A Versatile Synthesis of Heterocycles