Palladacyclopentadiene Complexes with Mono‐ and Didentate Imidato Ligands: Synthesis, Hemilabile Behaviour and Catalytic Application in the Stille Reaction
作者:José Luis Serrano、Ian J. S. Fairlamb、Gregorio Sánchez、Luis García、José Pérez、Jorge Vives、Gregorio López、Catherine M. Crawforth、Richard J. K. Taylor
DOI:10.1002/ejic.200300962
日期:2004.7
imidate group displays a bidentate N,O-coordination mode. The hemilabile behaviour of the imidate ligands has been investigated by reaction with a variety of P, N and S ligands, affording the corresponding mononuclear derivatives [NBu4][PdC4(COOMe)4}(imidate)L] [L = PPh3 (2a, 3a or 4a), P(p-C6H4F)3 (2b, 3b or 4b), PBu3 (2c, 3c or 4c), py (2d, 3d or 4d), p-MeC6H4NH2 (2e, 3e or 4e), tetrahydrothiophene
双核羟基络合物 [NBu4]2[Pd2C4(COOMe)4}2(μ-OH)2] (1) 已通过将两当量的 NBu4OH 添加到聚合物 [PdC4(COOMe)4}] 中制备n. 配合物 1 已成功用作三种新型双核亚胺酯桥接配合物 [NBu4]2[Pd2C4(COOMe)4}2(μ-imidate)2] [亚胺酸盐 = 琥珀酰亚胺 (suc) 2、邻苯二甲酰亚胺 (pht ) 3 或马来酰亚胺酯 (mal) 4],其中酰亚胺酯基团显示出双齿 N,O 配位模式。已通过与各种 P、N 和 S 配体反应研究了亚胺酯配体的半稳定性行为,得到相应的单核衍生物 [NBu4][PdC4(COOMe)4}(亚胺酯)L][L = PPh3 ( 2a、3a 或 4a)、P(p-C6H4F)3(2b、3b 或 4b)、PBu3(2c、3c 或 4c)、py(2d、3d 或 4d)、p-MeC6H4NH2(2e、3e