Addition de carbanions α benchrotreniques sur divers aldehydes non enolisables; evolution des produits primaires d'addition par oxydation d'oppenauer-woodward, influence de la substitution
作者:M.-C. Senechal-Tocquer、D. Senechal、J.-Y. Le Bihan、D. Gentric、B. Caro
DOI:10.1016/0022-328x(87)80307-8
日期:1987.4
Aromatic hydrocarbons complexed with a Cr(CO)3 unit react with benzaldehydes and furfural in THF and in the presence of t-BuOK at the benzylic position to give condensation products in good yields. Formation of ketones by “in situ Oppenauer-Woodward” oxidation is observed. Influence of ring substituents on this formation is discussed.
Stereocontrolled substitution of benzylic ethers complexed to tricarbonylchromium(0)
作者:Domenico Albanese、Susan E. Gibson (née Thomas)、Ellian Rahimian
DOI:10.1039/a806832a
日期:——
The nitrogen nucleophile HN(OH)C(O)OBut reacts with non-racemic chiral tricarbonylchromium(0) complexes of benzylic ethers with retention of configuration to provide a novel approach to non-racemic N-hydroxycarbamates and amines.
Optically Active Transition-Metal Complexes. 9.<sup>1</sup> A General Stereoselective Route to α-Chiral (<i>R</i>)-Tricarbonyl(η<sup>6</sup>-ethylbenzene)chromium Complexes. Novel Organometallic Phosphine Catalysts for the Asymmetric Hydrovinylation Reaction
作者:Ulli Englert、Roland Haerter、Daniela Vasen、Albrecht Salzer、Eva B. Eggeling、Dieter Vogt
DOI:10.1021/om990386q
日期:1999.10.1
nucleophiles. Both substitution reactions in the benzylic position proceed via retention of configuration. The addition of cyanide is not stereospecific. The phosphine derivatives are efficient catalysts for the enantioselective hydrovinylation of styrene to 3-phenyl-1-butene. X-ray crystal structures establish the absolute configuration of (R)-[(α-chloroethyl)η6-benzene]Cr(CO)3, (R)-[α-(diphenylphosphanyl
Addition of Stabilized Carbanions to Cationic (η6-Arene)tricarbonylmanganese Complexes: Syntheses of Homo (Mn–Mn) and Hetero (Mn–Cr) Dinuclear Complexes
作者:Eric Rose、Claudine Le Corre-Susanne、Françoise Rose-Munch、Christophe Renard、Vanessa Gagliardini、Fatima Teldji、Jacqueline Vaissermann