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Diverse Reactivity of Dialkylaluminum Dimesitylboryloxides [(mu-Mes2BO)AlR2]2. Synthetic and Structural Study

Diverse Reactivity of Dialkylaluminum Dimesitylboryloxides [(mu-Mes2BO)AlR2]2. Synthetic and Structural Study

R Anulewicz-Ostrowska, S Luliński, J Serwatowski, K Suwińska

Inorg Chem. 2000 Dec 11;39(25):5763-7.

PMID: 11151377

Abstract:

Several stable dimeric dialkylaluminum boryloxides of the formula [(mu-Mes2BO)AlR2]2 (R = Me (1), Et (2), iBu) have been prepared from dimesitylborinic acid Mes2BOH and trialkylaluminums R3Al. Compound 1 has been characterized by X-ray diffraction. These compounds exhibit diverse reactivity toward protonolytic reagents depending on the bulkiness of these reagents. Treatment of 1 with tert-butyl alcohol afforded crystalline species trans-[mu-tBuO)(Mes2BO)AlMe]2 (3), which is the first example of a mixed system containing boryloxide and alkoxide ligands together. Most surprisingly, Mes2BOH was found to undergo catalytic decomposition in the presence of [(mu-Mes2BO)AlR2]2 via the unexpected cleavage of one boron-carbon bond. The molecular structure of the decomposition product, i.e., trimesitylboroxin [MesBO]3 (4) is reported.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP20631849	Dimesitylborinic acid		20631-84-9	Price

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