Syntheses and Structures of Intramolecularly Stabilized Organoaluminium Compounds

The reaction of LiAr (Ar = 2-[(dimethylamino)methyl]phenyl) with AlCl3, MeAlCl2, and Me2AlCl in a 1:1 ratio yields the corresponding organoaluminium compounds ArAlCl2, ArAl(Cl)Me, and ArAlMe2 (1–3). The alanes Ar2AlCl and Ar2AlMe (4 and 5) were synthesized from AlCl3 and MeAlCl2 with two equivalents of LiAr. The products ArAl(Cl)R [R = tBu, C(SiMe3)3] 6 and 7 are formed by the reaction of LiR with 1. The Lewis acid 1 adds the bases iPrNH2 and THF to yield the adducts 1 · iPrNH2 and 1 · THF. The structures of the products were deduced from the 1H-, 13C-, and 27Al-NMR spectra and were confirmed by X-ray structural determinations of 5 and 1 · iPrNH2.

[1]  H. Schumann,et al.  Intramolekular stabilisierte gallium- und indiumorganyle: Synthese und röntgenstrukturanalyse repräsentativer bis- und tris[3-(dialkylamino) propyl]gallium- und -indium-derivate , 1994 .

[2]  D. M. Grove,et al.  Five-Coordinate Tungsten(VI) Phenylimido Alkylidene Complexes, and Isolated Precursors, Containing a Chelating Arylamine Ligand as Active ROMP Catalysts : Molecular Structure of W(C6H4CH2NMe2-2)(-CHSiMe3)(CH2SiMe3)(=NPh) , 1993 .

[3]  H. Schumann,et al.  Intramolecularly stabilized organoaluminium, ‐gallium and ‐indium derivatives crystal structures of {o‐[(dimethylamino)methyl]phenyl}dimethylgallium and {o‐[(diethylamino)methyl]phenyl}dimethylindium , 1990 .

[4]  A. Haaland.  Covalent versus Dative Bonds to Main Group Metals, a Useful Distinction , 1989 .

[5]  R. Benn,et al.  27Al-NMR-Spektroskopie zur Charakterisierung von Organoaluminium-Verbindungen , 1987 .

[6]  A. Wayda.  Cyclooctatetraenyllanthanide complexes. 1. Alkyl- and arylmonocyclooctatetraenyllutetium derivatives , 1983 .

[7]  P. Corfield,et al.  Preparation and molecular structure of bis[2-[(dimethylamino)methyl]phenyl]chloroindium(III), a five-coordinate diorganoindium complex , 1980 .

[8]  G. Koten,et al.  Group IB Organometallic Chemistry XXXIII: ArAuPPh3, ArAu(CNR), (ArAu)n and Ar4Cu2Au2 compounds in which the aryl group contains 2-MeO, 2,6-(MeO)2, 2-Me2N, 2-Me2NCH2 and (S)- or (R)-2-Me2NCHMe substituents as potential ligands , 1979 .

[9]  W. Schwarz,et al.  Addukte von Aluminiumchlorid und Galliumchlorid mit sekundären Aminen. Die Kristall‐ und Molekülstruktur von Bis(dimethylamin)‐Aluminiumtrichlorid , 1977 .

[10]  G. Koten,et al.  Crystal and molecular structure of C, N-{2-[(dimethylamino)methyl]phenyl} diphenyltin bromide , 1976 .

[11]  S. Svensson,et al.  On the Molecular Structure of the Complex Trimethylaluminium-Trimethylamine, (CH3)3AlN(CH3)3. , 1972 .

[12]  A. C. Cope,et al.  A new σ-bonded arylcobalt(III) complex , 1967 .

[13]  R. Merker,et al.  Reactions of polyhalides with lithium and trimethylchlorosilane , 1965 .

[14]  C. Nordman,et al.  The Crystal Structure and Dipole Moment in Solution of the Compound AlH3·2N(CH3)3 , 1963 .

[15]  F. Jones,et al.  Metalations of Benzyldimethylamine and Related Amines with n-Butyllithium in Ether. Deuteration to Form Ring and Side-chain Derivatives1 , 1963 .