Carbon-Carbon and Carbon-Heteroatom Coupling Reactions of Metallacarbynes

Abstract

Philippus F, Engel was born in Utrecht, The Netherlands, in 1965. He was educated in the State University of Utrecht and specialized in Organometallic Chemistry with Professor G. van Koten in 1989. He then moved to Strasbourg where he obtained his These de I'Universile Louis Pasteur in 1993. The subject of his Ph.D. thesis was on the organometallic chemistry of "Fischer-type" melallacarbynes. He recently joined Shell Research in Amsterdam, The Netherlands, as an associate research chemist.Michel Pfeffer was bom in Alsace in 1948 and he received his Doctorat d'Etal from the Universite Louis Pasteur in 1975. In 1976 he spent one year wth Professor F. G. A. Stone at the University of Bristol. Since 1973 he has held a position in the CNRS at ULP Strasbourg where he became Directeur de Recherche in 1985. His main research interests are in the field of organomelallic chemistry with an emphasis on metalmediated syntheses of carbon-carbon and carbon-heteroatom bonds.

Hydroboration of metal–carbon triple bonds †

“…1 The chemistry of the transition metal-carbon triple bond, present in such complexes, has meanwhile developed into a major field of research. [2][3][4][5][6][7][8][9][10][11] Particularly helpful in understanding the diverse reactivity of the M᎐ ᎐ ᎐ C bond was Stone's recognition of the synthetic utility of the isolobal relationship 12 between alkynes and carbyne metal complexes, which quickly gave them a new role as versatile organometallic building blocks. 13 Isolobality often relates organometallic (e.g.…”

Synthesis, Characterization, and Reactivity of Metalla‐Chalcogenirenium Compounds†

“…The unsaturated three‐membered cationic Ch‐containing ring has been assumed as important intermediates in addition to reactions of chalcogenium‐containing electrophiles to alkynes [ 11 ] or carbon‐heteroatom coupling reactions of metal‐carbynes. [ 12 ] Isolation of these reactive chalcogenirenium cations would help better understand the mechanism of electrophilic additions of organochalcogen cation ([RCh] + ) to alkynes or metal‐carbynes, however, this seems very challenging. Our interest in new building blocks for metallacycles [ 13 ] prompted us to examine the previously rare family of metalla‐chalcogenirenium cations.…”

Forging Three Single Bonds on One Carbon via Metal Carbynes or Carbyne Equivalents

“…either on the alkylidyne ligands or on the metal centers. [ 3‐4 ] Of note, many of these advances have been made by the early 1980s. Though metallacarbynes hold huge potentials as key intermediates in a wide variety of transition metal catalysis, the successful examples of metallacarbynes in catalysis have so far been largely limited to Mo‐ and W‐catalyzed alkyne metathesis reactions.…”