Synthesis, characterization and catalytic activity in Heck-type reactions of orthometallated PdII and PtII complexes derived from (1R,2R)-1,2-diaminocyclohexane
作者:Judith Bravo、Carlos Cativiela、Rafael Navarro、Esteban P Urriolabeitia
DOI:10.1016/s0022-328x(02)01148-8
日期:2002.5
2′-bipyridyl (bipy) behave as monodentate N-donor ligands yielding [Pd(L-κ-C,N,N)(κ1-N-phen)](ClO4) 10 and [Pd(L-κ-C,N,N)(κ1-N-bipy)](ClO4) 11. Treatment of 1 with PtCl2(DMSO)2 (1:1 molar ratio) in refluxing 2-methoxyethanol gives Cl2Pt[(NH2)2C6H10N,N′] 13a and [Pt(Cl)(C6H24,5-(OMe)22-CHN-(1R,2R)C6H10NH2-κ-C,N,N)] 13b, while [Pt(Cl)(L-κ-C,N,N)] 14 can be obtained by reaction of [Pt(μ-Cl)(η3-2-MeC3H4)]2
手性二亚胺(1 - [R,2 - [R)-C 6 H ^ 10 - [ ë NCHC 6 ħ 3 3,4-(OME)2 ] 2 1(LH)反应以[将Pd(OAC )2 ](1:1的摩尔比; OAC =乙酸乙酯),得到orthometallated [将Pd(OAc)(c ^ 6 ħ 2 4,5-(OME)2 2-CH ñ - (1 - [R,2 - [R )-C 6 ħ 10 ñ CHC 6 ħ 3 -3',4' - (OME)2 -κ-C,N,N)] 2(缩写为[Pd(OAc)(L-κ-C,N,N)]),通过仅在一个芳环上的CH键活化和两个亚氨基N原子的N,N配位来实现。2与过量的LiCl反应生成[Pd(Cl)(L-κ-C,N,N)] 3。3与AgClO 4和中性或阴离子配体L'(摩尔比为1:1:1)反应,可得到[Pd(L-κ-C,N,N)(L')](ClO 4)(L'=