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By Janusz Lewiński, Andrew E. H. Wheatley (auth.), Simon Woodward, Samuel Dagorne (eds.)

Janusz Lewiński and Andrew E. H. Wheatley: easy trivalent organoaluminum species: views on constitution, bonding and reactivity.- Stephan Schulz: Organoaluminum complexes with bonds to s-block, p-block, d-block, and f-block steel centers.- Samuel Dagorne and Christophe Fliedel: Low valent organoaluminium (+I, +II) species.- Rudolf Wehmschulte: Organoaluminum species in homogeneous polymerization catalysis.- Paul Knochel, Tobias Blümke, Klaus Groll and Yi-Hung Chen: instruction of Organoalanes for natural Synthesis.- Yuki Naganawa and Keiji Maruoka: Reactions caused via Lewis Acidic Organoaluminum Species.- Usein M. Dzhemilev and Vladimir A. D'yakonov: Hydro-, Carbo- and Cycloalumination of Unsaturated Compounds.- Andreas Kolb and Paultheo von Zezschwitz: Organoaluminum Couplings to Carbonyls, Imines and Halides.- Oscar P� mies and Montserrat Diéguez: Conjugate Addition of Organoaluminum Species to Michael Acceptors and similar Processes.

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Modern Organoaluminum Reagents: Preparation, Structure, Reactivity and Use

Janusz Lewiński and Andrew E. H. Wheatley: uncomplicated trivalent organoaluminum species: views on constitution, bonding and reactivity. - Stephan Schulz: Organoaluminum complexes with bonds to s-block, p-block, d-block, and f-block steel facilities. - Samuel Dagorne and Christophe Fliedel: Low valent organoaluminium (+I, +II) species.

Extra resources for Modern Organoaluminum Reagents: Preparation, Structure, Reactivity and Use

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21 Proposed pathways for organoaluminum amide formation from an alkyl aluminum and an amine AlR2 N H R R2Al X NR2 H IV III prior to the thermolytic formation of Ph(tBuCH2)NAlMe2, which is found to be dimeric in the solid state [193]. The inclusion of extra Lewis basic heteroatoms within the amide fragment [194, 195] or the use of chelating diamines to access aluminum bisamide products [196, 197] was shown to disfavor the formation of aggregates. However, in the absence of such factors, a dimeric structure is usually retained in solution.

While the equimolar reaction of AlEt3 with the corresponding pro-ligand resulted in the coordination of aluminum by one of two pyrazolyl rings to form monomer 76 (Fig. 25), the use of two equiv. of AlEt3 afforded the dinuclear Al complex 77. Remarkably, species 77 has been crystallized as a self-assembled single-stranded chiral helicate through the formation of CH-p interactions [204]. Along with those resulting from the selfassembly of Al-based cinchona alkaloid sub-units for the construction of Simple Trivalent Organoaluminum Species: Perspectives on Structure, Bonding.

23 5 Organoaluminum Hydroxides The controlled hydrolysis of alkyl- and arylaluminum compounds has been attracting attention for some years now and, as such, has been the subject of several reviews [27, 30]. Spectroscopic investigations have long-since shown that the hydrolysis of AlR3 proceeds via the initial formation of an aqua adduct that subsequently eliminates RH (Eqs. 5 and 6) [166]. Recent NMR studies carried out at various temperatures on the hydrolysis of bulky homoleptic organoaluminums reinforced this view.

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