Synthesis and reactions of mono- and dipalladium complexes containing 2-thienyl and 2,5 (or 2,5′) -bridged thienylene (or dithienylene) ligand: new dipalladium complex formation connected by thioketene part via CS bond cleavage of thiophene
作者:Yong-Joo Kim、Sang-Chul Lee、Moon Hwan Cho、Soon-W. Lee
DOI:10.1016/s0022-328x(99)00391-5
日期:1999.10
of the PdC bonds to give trans,trans-(Me3P)2IPdC(O)C4H2SPdI(PMe3)2 (10) in 94% and trans,trans-(Et3P)2BrPdC(O)C4H2SPdBr(PEt3)2 (11) in 23%, respectively. Also, treatments of 5 with n-butyl, tert-butyl, and cyclohexyl isocyanides result in its insertion into both of the PdC bonds to form iminoacyl Pd complexes trans,trans-(Me3P)2IPdC(NR)C4H2SC(NR)PdI(PMe3)2 (R=n-Bu, 12; t-Bu, 13; cyclohexyl, 14)
2-碘噻吩,2-溴噻吩,和2,5-二溴噻吩用等摩尔的Pd(CH的氧化加成反应2 CHPh)L- 2(L = PME 3和PET 3)在THF产生单核σ噻吩基钯室温( II)配合物反式-(2-C 4 H 3 S)PdX(PMe 3)2(X = I,1 ; X = Br,2)和反式-(5-Br(2-C 4 H 2 S)) PdBrL 2(L = PME 3,3 ; L = PET 3,4)。在THF中以2:1的摩尔比使用2,5-二溴噻吩,2,5-二碘噻吩和5,5-二溴-2,2'-联噻吩进行反应,可得到噻吩基(或二噻吩基)桥连的二钯配合物反式,反式-L 2。 XPD(μ-2,5--C 4 H ^ 2 S)PDXL 2(L = PME 3 ; X = I,5峰; br,6 ; L = PET 3 ; X = Br的,7)和反式,反式- (ME 3 P)2 BrPd(μ-2,5′-C 4 H 2 S-C