将不饱和烃插入配合物(N⌒N)Pd(C(N-2,6-Me 2 Ph)Me)X(N = N = bpy,phen; X = Cl,Br,I ,BF 4):结构和力学研究
摘要:
已经研究了Pd-碳胺配合物对不饱和烃键的反应性。将降冰片二烯和降冰片烯插入中性配合物(N⌒N)Pd(C(N-2,6-Me 2 C 6 H 3)Me)X(X = Cl(1),Br(2),I(3); N = N = 2,2'-联吡啶(bpy,a),1,10-菲咯啉(phen,b))定量提供了新颖稳定的络合物[(N⌒N)Pd( C 7 H 8 C(NR)Me)] X和[(N⌒N)Pd(C 7 H 10 C(NR)Me)] X(R = 2,6-Me 2 C 6 H 3)。未应变的不饱和烃乙烯,丙烯,3-甲基-1,2-丁二烯和乙炔与阳离子络合物[(N⌒N)Pd(C(NR)Me)] X(N⌒N= bpy, phen; R = 2,6-Me 2 C 6 H 3; X = BF 4),提供了配合物[(N⌒N)Pd(C 2 H 4 C(NR)Me)] X,[(N⌒N) Pd(C 3 H 6 C(NR)Me)]
Isocyanide Insertion into the Palladium−Carbon Bond of Complexes Containing Bidentate Nitrogen Ligands: A Structural and Mechanistic Study
作者:Johannes G. P. Delis、Peter G. Aubel、Kees Vrieze、Piet W. N. M. van Leeuwen、Nora Veldman、Anthony L. Spek、Franciscus J. R. van Neer
DOI:10.1021/om970096e
日期:1997.6.1
involves substitution of the halide by the isocyanide followed by a rate-determining methyl migration to the precoordinated isocyanide. Kinetic measurements of the isocyanide insertion reaction, which provided the reaction rate constants of the isocyanide association (k1), isocyanide dissociation (k-1), and methyl migration reaction (k2), have demonstrated that the migration rate of the methyl group to
异氰酸酯2,6-二甲基苯基异氰化物(DIC),叔丁基异氰化物(TIC)和甲苯磺酰基甲基异氰化物(TosMIC)插入配合物(N⌒N)Pd(Me)Cl(N⌒N= 2,2'-联吡啶(bpy),1,10-菲咯啉(phen),2,2'-联嘧啶(bpm))定量提供(N = N )Pd(C(N R)Me)Cl(R = 2 ,6-Me 2 C 6 H 3,t- Bu,CH 2甲苯磺酰基)。已显示反应过程是通过中间体[(N⌒N)Pd(CN-R)(Me)] Cl进行的(N⌒N= bpy,phen; R = 2,6-Me 2 C 6 H 3,t- Bu,CH 2Tosyl),已通过NMR和IR光谱法以及电导率测量在250 K下进行了表征。插入反应的机理包括用异氰酸酯取代卤化物,然后通过速率确定甲基向预配位异氰酸酯的迁移。异氰酸酯插入反应的动力学测量,提供了异氰酸酯缔合(k 1),异氰酸酯离解(k - 1)和甲基迁移反应(k
Insertion of Unsaturated Hydrocarbons into the Palladium−Carbon Bond of Complexes (N⌒N)Pd(C(N-2,6-Me<sub>2</sub>Ph)Me)X (N⌒N = bpy, phen; X = Cl, Br, I, BF<sub>4</sub>): A Structural and Mechanistic Study
作者:Johannes G. P. Delis、Peter G. Aubel、Kees Vrieze、Piet W. N. M. van Leeuwen、Nora Veldman、Anthony L. Spek
DOI:10.1021/om9701940
日期:1997.9.1
The reactivity of Pd−carboimine complexes toward unsaturated hydrocarbon bonds has been studied. Insertion of norbornadiene and norbornene into the Pd−C bond of the neutral complexes (N⌒N)Pd(C(N-2,6-Me2C6H3)Me)X (X = Cl (1), Br (2), I (3); N⌒N = 2,2‘-bipyridine (bpy, a), 1,10-phenanthroline (phen, b)) afforded quantitatively the novel and stable complexes [(N⌒N)Pd(C7H8C(NR)Me)]X and [(N⌒N)Pd(C7H10C(NR)Me)]X
已经研究了Pd-碳胺配合物对不饱和烃键的反应性。将降冰片二烯和降冰片烯插入中性配合物(N⌒N)Pd(C(N-2,6-Me 2 C 6 H 3)Me)X(X = Cl(1),Br(2),I(3); N = N = 2,2'-联吡啶(bpy,a),1,10-菲咯啉(phen,b))定量提供了新颖稳定的络合物[(N⌒N)Pd( C 7 H 8 C(NR)Me)] X和[(N⌒N)Pd(C 7 H 10 C(NR)Me)] X(R = 2,6-Me 2 C 6 H 3)。未应变的不饱和烃乙烯,丙烯,3-甲基-1,2-丁二烯和乙炔与阳离子络合物[(N⌒N)Pd(C(NR)Me)] X(N⌒N= bpy, phen; R = 2,6-Me 2 C 6 H 3; X = BF 4),提供了配合物[(N⌒N)Pd(C 2 H 4 C(NR)Me)] X,[(N⌒N) Pd(C 3 H 6 C(NR)Me)]