The synthesis and late transition metal chemistry of 7-aza-N-indolyl phosphines and the activity of their palladium complexes in CO–ethene co-polymerisation
作者:Andrew D. Burrows、Mary F. Mahon、Maurizio Varrone
DOI:10.1039/b309882f
日期:——
N-donor ligands. From the stepwise insertion reactions of CO and ethene with 5a,b, the acyl complexes [PdC(O)Me}(OTf)(L-κ2P,N)] (7a, L = L1; 7b, L = L2) and alkyl complexes [PdCH2CH2C(O)Me-κ2C,O}(L-κ2P,N)]OTf (8a, L = L1; 8b, L = L2) have been isolated and crystallographically characterised, and the acyl complexes [PdC(O)CH2CH2C(O)Me-κ2C,O}(L-κ2P,N)]OTf (9a, L = L1; 9b, L = L2) have been spectroscopically
这 7-氮杂-N-吲哚基膦 配体PR 2(N 2 C 7 H 5)(L 1,R = Ph; L 2,R = NC 4 H 4)是通过两步法制备的,包括7-氮杂吲哚 与BuLi,然后反应 锂盐使用PClR 2。大号1和大号2与[的MC1反应2(COD)](M =钯,铂),得到[的PdCl 2(L-κ 2 P,N)](1A,L = 大号1 ; 1b中,L = 大号2)或[氯铂酸2(L-κ 2 P,N)](2A,L = 大号1 ; 2B,L = 大号2),并用的[Rh(μ-Cl)的(COD)] 2在CO存在下得到[的RhCl(CO)(L-κ 2 P,N)](3A,L = L 1 ; 在图3b中,L = L 2)。报告了1a,b和3a,b的晶体结构,并且结构和光谱学证据证实L 2是比L 1更差的σ供体/更好的π受体。的配合物[PdClMe(L-κ 2 P,N)](4a中,L = 大号1 ; 4b中,L