Chemistry of diamino-ligated methylpalladium(II) alkoxides and aryloxides (Part II): methoxide formation and carbonylation reactions
作者:Gerardus M. Kapteijn、Athanasia Dervisi、Michel J. Verhoef、M.A. Frederik、H. van den Broek、David M. Grove、Gerard van Koten
DOI:10.1016/0022-328x(96)06171-2
日期:1996.6
Reaction of N-ligated methylpalladium(II) alkoxide and aryloxide complexes [Pd(Me)(OR)(N ∼ N)] (R = Ph, CH(CF3)2; N ∼ N tmeda (N,N,N′,N′-tetramethylethylenediamine) or bpy (2,2′-bipyridyl)) with carbon monoxide produces the corresponding methylesters in high yields. The insertion takes place either into the PdMe bond (aryloxide complexes) or into the PdOR bond (alkoxide complexes). Methylalladium(II)
N-连接的甲基钯(II)醇盐与芳氧化物配合物的反应[Pd(Me)(OR)(N〜N )](R = Ph,CH(CF 3)2; N〜Ntmeda(N,N,N ',N'-四甲基乙二胺)或bpy(2,2'-联吡啶基))与一氧化碳可高收率地产生相应的甲酯。插入发生在PdMe键(芳氧化物配合物)或PdOR键(烷氧化物配合物)中。Methylalladium(II)甲醇配合物[钯(ME)(OME)(N~N)](N〜N = TMEDA,联吡啶)已被生成在原位由芳-或醇盐-甲醇交换反应为其中的平衡常数已被确定。该联吡啶-结扎methylpalladium甲醇复杂经受插入的CO产生任一methylpalladium甲氧基羰基络合物[钯(ME(CO 2在-60℃下ME)(联吡啶)])或甲氧基羰基acylpalladium络合物[钯(COME)(CO 2Me)(bpy)](在-25°C下);两种羰基化物质都可以在低温下分离和表征。