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Chemical reactivities of [Me 2 Al(µ-NPr i 2 ) 2 MgMe] 4 and [Me 2 Al(µ-NEt 2 ) 2 MgMe] 2 : crystal structures of [Me 2 Al(µ-NPr i 2 ) 2 Mg(µ-I)] 2 , [Me 2 Al(µ-OBu t ) 2 Mg(µ-OBu t )] 2 , Me 2 Al(µ-NPr i 2 )(µ-OEt)Mg(µ-NPr i 2 )(µ-OEt)AlMe 2 and Me 2 Al(µ-OBu<…

1994; Royal Society of Chemistry; Issue: 3 Linguagem: Inglês

10.1039/dt9940000315

2050-5671

Chung‐Cheng Chang, Wen‐Hwa Lee, Tzong‐Yih Her, Gene‐Hsiang Lee, Shie‐Ming Peng, Yu Wang,

Organometallic Complex Synthesis and Catalysis

The nucleophilic attack of alcohols, amines and iodine on the magnesium atoms of [Me2Al(µ-NPri2)2MgMe]4A and [Me2Al(µ-NEt2)2MgMe]2B has been investigated. Compound A undergoes metathesis with amines (Et2NH and Pri2NH) and iodine to give [Me2Al(µ-NPri2)2Mg(µ-NR2)](R = Et 7 or Pri4) and [Me2Al(µ-NPri2)2Mg(µ-I)]25, respectively. Partial degradation of A with MeOH or ethanol gives Me2Al(µ-NPri2)(µ-OMe)Mg(µ-NPri2)(µ-OMe)AlMe21a and [Me2Al(µ-NPri2)(µ-OEt)Mg(µ-NPri2)(µ-OEt)AlMe21b, respectively, whereas partial degradation with ButOH gives Me2Al(µ-OBut)2Mg(µ-OBut)2AlMe22 and [Me2Al(µ-OBut)2Mg(µ-OBut)]23. Compound B undergoes metathesis with ButOH also to give 2 and 3. The intermediate, Me2Al(µ-NR2)2Mg(µ-Me)(µ-OBut)Mg(µ-NR2)2AlMe2I in the reactions of A and B with ButOH is also examined. The molecular structures of compounds 1b, 2, 3 and 5 were determined by X-ray diffraction.