Stabilized Bis-ylides as a Source of Carbene Ligands in Palladium(II) and Platinum(II) Complexes
作者:Larry R. Falvello、Rosa Llusar、Marina E. Margalejo、Rafael Navarro、Esteban P. Urriolabeitia
DOI:10.1021/om020467d
日期:2003.3.1
2Me)}(L)(PPh3)](ClO4) (L = SC4H8, 9; PPh3, 10), probably through the initial formation of an ylide-carbene complexsimilar to 1−6followed by the migratory insertion of the carbene ligand into the Pd−C(C6F5) bond and coordination of the newly generated ylide function. The crystal structure of complex 1a·CH2Cl2 has been analyzed by X-ray diffraction.
α稳定的双内酯[Ph 3 P C(CO 2 Me)-C(CO 2 Me)PPh 3 ]与M(II)双溶剂化物衍生物顺式[[M(C 6 F 5)] 2(OC 4 H 8)2 ]或[M(C∧X)(OC 4 H 8)2 ] ClO 4(M = Pd,Pt;C∧X=正金属配体),生成ylide-carbene配合物顺式- [M(C 6 F 5)2 C(CO 2 Me)−C(CO 2 Me)(PPh3)}(PPh 3)](M = Pt 1a,Pd 1b)或[M(C∧X)C(CO 2 Me)-C(CO 2 Me)(PPh 3)}(PPh 3)] ClO 4(M = PT,C∧X= ö -CH 2 C ^ 6 ħ 4 P(ø甲苯基)2,2 ; M =钯,C∧X= ö -CH 2 C ^ 6 ħ 4 P(ø甲苯基)2,3 ; CH 2 C ^ 9 ħ 6 N-C 8,N,4 ; NC 5 H ^ 4 -