[EN] SYNTHESIS OF PHEROMONES AND RELATED MATERIALS VIA OLEFIN METATHESIS [FR] SYNTHÈSE DE PHÉROMONES ET DE MATÉRIAUX APPARENTÉS PAR MÉTATHÈSE D'OLÉFINES
Applications of PC(sp<sup>3</sup>)P Iridium Complexes in Transfer Dehydrogenation of Alkanes
作者:David Bézier、Maurice Brookhart
DOI:10.1021/cs500892p
日期:2014.10.3
Iridium ethylene complexes based on the PC(sp3)P pincer-type triptycene ligand have been synthesized. Complexes bearing various substituents on the phosphines have been investigated as catalysts in transfer dehydrogenation of alkanes. The complex 8a, which bears isopropyl groups, has demonstrated high stability and activity when used as a catalyst in the disproportionation of 1-hexene at 180 °C and
Metal catalysis in organic reactions. Part 13. The reaction of 3-en-1-ynes with trialkylalanes: influence of transition-metal complexes
作者:Anna Maria Caporusso、Giampaolo Giacomelli、Luciano Lardicci
DOI:10.1039/p19810001900
日期:——
The reaction between trialkylalanes and 3-alkyl-, 4-alkyl-, or 3,4-dialkyl-but-3-en-1-ynes (1) leads to products which correspond to metallation, reduction, and carbalumination processes. The extent of such reactions, and the regio- and stereo-selectivity of the carbalumination, are dependent on the enyne used. A mechanism is proposed involving tautomeric equilibria among several α-unsaturated organoaluminum
The Stereochemistry of the Thermal Cheletropic Decarbonylation of 3-Cyclopentenone As Determined by Multiphoton Infrared Photolysis/Thermolysis
作者:Gregory R. Unruh、David M. Birney
DOI:10.1021/ja0353661
日期:2003.7.1
cheletropic decarbonylation of 3-cyclopentenone. The stereochemistry of decarbonylation of an unconstrained derivative (trans,trans-2,5-dimethyl-3-cyclopentenone, 4) has been determined for the first time. Under conventional pyrolysis conditions, thermal rearrangements of the initial product (trans,trans-2,4-hexadiene, 5) occur at the high temperatures required for the decarbonylation. However, by
Molecular Complexity via C–H Activation: A Dehydrogenative Diels–Alder Reaction
作者:Erik M. Stang、M. Christina White
DOI:10.1021/ja2059704
日期:2011.9.28
Traditionally, C-H oxidation reactions install oxidized functionality onto a preformed molecular skeleton, resulting in a local molecular change. The use of C H activation chemistry to construct complex molecular scaffolds is a new area with tremendous potential in synthesis. We report a Pd(II)/bis-sulfoxide-catalyzed dehydrogenative Diels-Alder reaction that converts simple terminal olefins into complex cycloadducts in a single operation.
Lehmkuhl, Herbert; Fustero, Santos, Liebigs Annalen der Chemie, 1980, # 9, p. 1353 - 1360