organoaluminum compounds

The activity and chemoselectivity of the Cp2ZrCl2-XAlBui2 (X = H, Bui) and [Cp2ZrH2]2-ClAlEt2 catalytic systems activated by (Ph3C)[B(C6F5)4] or B(C6F5)3 were studied in reactions with 1-hexene. The activation of the systems by B(C6F5)3 resulted in the selective formation of head-to-tail alkene dimers in up to 93% yields. NMR studies of the reactions of Zr complexes with organoaluminum compounds (OACs) and boron activators showed the formation of Zr,Zr- and Zr,Al-hydride intermediates, for which diffusion coefficients, hydrodynamic radii, and volumes were estimated using the diffusion ordered spectroscopy DOSY. Bis-zirconium hydride clusters of type x[Cp2ZrH2∙Cp2ZrHCl∙ClAlR2]∙yRnAl(C6F5)3−n were found to be the key intermediates of alkene dimerization, whereas cationic Zr,Al-hydrides led to the formation of oligomers.

Download Full-text

Synthesis of organoaluminum compounds containing a silicon atom in the alkyl chain

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science ◽

10.1007/bf00908022 ◽

1962 ◽

Vol 11 (2) ◽

pp. 231-233

Author(s):

L. I. Zakharkin ◽

L. A. Savina

Keyword(s):

Silicon Atom ◽

Alkyl Chain ◽

Organoaluminum Compounds

Download Full-text

Preparation of organoaluminum compounds by hydrozirconation-transmetalation

Journal of the American Chemical Society ◽

10.1021/ja00507a017 ◽

1979 ◽

Vol 101 (13) ◽

pp. 3521-3531 ◽

Cited By ~ 102

Author(s):

Denise B. Carr ◽

Jeffrey Schwartz

Keyword(s):

Organoaluminum Compounds

Download Full-text

SOME REACTIONS OF ORGANOALUMINUM COMPOUNDS WITH NITROGEN-CONTAINING BASES

Canadian Journal of Chemistry ◽

10.1139/v63-186 ◽

1963 ◽

Vol 41 (5) ◽

pp. 1359-1367 ◽

Cited By ~ 27

Author(s):

Neil R. Fetter ◽

Bodo Bartocha ◽

Frederick E. Brinckman Jr. ◽

Donald W. Moore

Keyword(s):

Linear Structure ◽

Structural Formula ◽

Organoaluminum Compounds

The reactions of Me3Al with Me2NNMe2 and Me2NCH2NMe2 have yielded complexes whose n.m.r. spectra suggest cyclic structures. They have the formulas Me3Al:Me2NNMe2 and Me3Al:Me2NCH2NMe2 respectively. Me3Al reacts with Me2NCH2CH2NMe2 to form a complex with a linear structure and the formula Me3Al:Me2NCH2CH2NMe2:AlMe3.The reactions of H3Al:NMe3 with several methyl hydrazines have yielded the following compounds: [—Al(HNNHMe)NHNMe—]n, [—HAlNNMe2—]n, H2Al—NHNEt2, [(—HAlNNEt2—):NMe3]n, and H2Al—NMe2. No reaction occurred between H3Al·(Et2O)n and tetramethylhydrazine and the reaction of 3 moles of H2NNMe2 with 1 mole of H3Al:NMe3 yielded a compound for which no structural formula could be assigned, but which had emperical formula C4H15N5Al.

Download Full-text