Investigations of Benzyl and Aryl Palladium Complexes with Pendant Hydroxy Substituents and Their Transformation into Benzolactones on Carbonylation
作者:W. Edward Lindsell、Daniel D. Palmer、Peter N. Preston、Georgina M. Rosair、Ray V. H. Jones、Alan J. Whitton
DOI:10.1021/om049131p
日期:2005.3.1
PdCl(COCH2C6H4-2-CH2OH)(PPh3), 12b, has been studied spectroscopically. Reactions of 2-halogenobenzenealkanols with Pd(PPh3)4 afford simple derivatives with monodentate aryl ligands, trans-Pd(C6H4-2-(CH2)nOH)(PPh3)2X (n = 1, X = Br, 15; n = 2, X = I, 17) and the known complex (n = 1, X = I, 14), which on reaction with NaH are also converted into binuclear products Pd2(μ-2-O(CH2)nC6H4)2(PPh3)2 n = 1, 19a (previously
用的Pd(PPh 2-羟甲基苄基卤化物的反应3)4得到的复合物的Pd(CH 2 C ^ 6 ħ 4 -2-CH 2 OH-κ 2 Ç 1含有二齿2-羟甲基苄基配体的α,O)(PPh 3)X(X = Br,3; X = Cl,4)。的进一步反应3或4用NaH产生的双核环化缩合产物的Pd 2(μ-2-OCH 2 C ^ 6 ħ 4 CH 2)2(PPH 3)2,7,含有中央平面的Pd 2 ö 2单元并入到五个稠环的系统。化合物7经历膦取代,以形成相关双核产物的Pd 2(μ-2-OCH 2 C ^ 6 ħ 4 CH 2)2(PAR 3)2 的Ar = p -MeC 6 ħ 4,8 ; p - (MEO)C 6 H ^ 4,9 },而是由多个供电子膦和二膦通过切割,得到单核醇盐的Pd(OCH 2 C ^ 6 ħ 4 CH 2 -κ 2 Ç 1α,O)(PP)(PP = dppf,10 ; dppe,11)。化合物3,4和7