Synthesis of aryloxyaluminium hydrides and their conversion into aryloxyalumoxanes (ArOAlO)n

Sukesh Shekar; Mamie M. Taylor; Brendan Twamley; Rudolf J. Wehmschulte

doi:10.1039/B913607J

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

Synthesis of aryloxyaluminium hydrides and their conversion into aryloxyalumoxanes (ArOAlO)_n†

Sukesh Shekar,^a Mamie M. Taylor,^a Brendan Twamley^b and Rudolf J. Wehmschulte*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Florida Institute of Technology, 150 West University Blvd., Melbourne, FL, USA
E-mail: rwehmsch@fit.edu
Fax: 1 321 674 8951

^b University Research Office, University of Idaho, Moscow, ID, USA

Abstract

The reaction of bulky phenols with H₃Al·NMe₃ afforded the new primary phenoxyalanes Mes*OAlH₂·NMe₃, 2 (Mes* = 2,4,6-^tBu₃-C₆H₂-), 2,6-Dipp₂C₆H₃OAlH₂·NMe₃, 3 (Dipp = 2,6-ⁱPr₂C₆H₃-), and 2,6-Trip₂C₆H₃OAlH₂·NMe₃, 4 (Trip = 2,4,6-ⁱPr₃C₆H₂-) as colorless crystalline solids. Subsequent reactions of 2,6-^tBu₂-4-MeC₆H₂OAlH₂·NMe₃, 1, and 2 with oxygen sources such as (Me₂HSi)₂O or Me₂SO gave the disiloxyalane 2,6-^tBu₂-4-Me-C₆H₂OAl(OSiHMe₂)₂·NMe₃, 5, and the alumoxane (Mes*OAlO·OSMe₂)₄, 6. The latter compound is a rare example of a species featuring an unsupported eight-membered (Al-O)₄ ring. The new compounds were characterized by ¹H and ¹³C{¹H} NMR and IR spectroscopy and elemental analyses, and compounds 3 and 6 were also characterized by single crystal X-ray diffraction.

Download options Please wait...

Supplementary files

Article information

DOI: https://doi.org/10.1039/B913607J
Article type: Paper
Submitted: 08 Jul 2009
Accepted: 25 Aug 2009
First published: 16 Sep 2009

Download Citation

Dalton Trans., 2009, 9322-9326

Permissions

Request permissions

Synthesis of aryloxyaluminium hydrides and their conversion into aryloxyalumoxanes (ArOAlO)_n

S. Shekar, M. M. Taylor, B. Twamley and R. J. Wehmschulte, Dalton Trans., 2009, 9322 DOI: 10.1039/B913607J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Dalton Transactions