Diverse reactivity of dialkylaluminum dimesitylboryloxides [(μ-Mes2BO)AlR2]2.: Synthetic and structural study

被引：35

作者：

Anulewicz-Ostrowska, R

Lulinski, S

Serwatowski, J

Suwinska, K

机构：

[1] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland

[2] Univ Warsaw, Fac Chem, PL-02093 Warsaw, Poland

[3] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

来源：

INORGANIC CHEMISTRY | 2000年 / 39卷 / 25期

关键词：

D O I：

10.1021/ic9914286

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Several stable dimeric dialkylaluminum boryloxides of the formula [(mu -Mes(2)BO)AlR2](2) (R = Me (1), Et (2),Bu-1) have been prepared from dimesitylborinic acid Mes(2)BOH 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-(BuO)-Bu-t)(Mes(2)BO)AlMe](2) (3), which is the first example of a mixed system containing boryloxide and alkoxide ligands together. Most surprisingly, Mes(2)BOH was found to undergo catalytic decomposition in the presence of [(mu -Mes(2)BO)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.

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页码：5763 / 5767

页数：5

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