Carbon−Oxygen Bond Formation at Organopalladium Centers: The Reactions of PdMeR(L<sub>2</sub>) (R = Me, 4-tolyl; L<sub>2</sub> = tmeda, bpy) with Diaroyl Peroxides and the Involvement of Organopalladium(IV) Species
作者:Allan J. Canty、Melanie C. Denney、Brian W. Skelton、Allan H. White
DOI:10.1021/om030644q
日期:2004.3.1
PdIVMe3 complexesreductivelyeliminate Me−Me, and the PdIVMe2Tol complexeseliminate Me−Me and Tol−Me. The resultant Pd(II) complexes PdII(O2CAr)R(L2) react with (ArCO2)2 at higher temperatures to form PdII(O2CAr)2(L2) and R-O2CAr (R = Me, Tol), except for PdII(O2CAr)Tol(tmeda), which forms PdII(O2CAr)2(tmeda) and 4,4‘-bitolyl. Each reaction step has been confirmed by the independent synthesis of intermediates
第16组氧化剂二苯甲酰基-和双(4-三氟甲基苯甲酰基)-过氧化物与二齿氮供体配体2,2'-联吡啶和N,N,随着温度从-70°C升高,N ',N'-四甲基乙二胺会逐步进行分步处理。碳-氧键在此反应序列中形成,但不是由光谱检测到的那些Pd(IV)络合物形成。初始反应得到未检测到的“ Pd IV(O 2 CAr)2 MeR(L 2)”(Ar = Ph,Ar F ; R = Me,Tol; L 2= bpy,tmeda),立即与Pd II MeR(L 2)进行芳酸甲酯交换,得到Pd II(O 2 CAr)R(L 2)和Pd IV(O 2 CAr)Me 2 R(L 2),其中1 H NMR光谱检测到除Pd IV(O 2 CAr)Me 2 Tol(tmeda)以外的所有产物。在升高温度时,Pd IV Me 3络合物还原性消除Me-Me,而Pd IV Me 2 Tol络合物消除Me-Me和Tol-Me。生成的Pd(II)配合物PdII(O
Mass Spectrometric Studies of Reductive Elimination from Pd(IV) Complexes
作者:Jakub Hývl、Jana Roithová
DOI:10.1021/ol403190g
日期:2014.1.3
Reductiveelimination of ethane from the palladium(IV) complex [PdMe3(bpy)I] (bpy = 2,2′-bipyridine) is studied by electrospray ionization mass spectrometry. Palladium(IV) complexes can be detected as binuclear clusters [Pd2Me6I(bpy)2]+ or as complexes [PdMe3(bpy)(L)]+ stabilized by an electron-donating ligand L. Fragmentation of all palladium(IV) complexes is dominated by elimination of ethane which
Studies of oxidative addition-reductive elimination reactions, and the crystal structure of the palladium(IV) complex Me2(p-BrC6H4CH2)Pd(phen)Br
作者:Allan J. Canty、Andrew A. Watson、Brian W. Skelton、Allan H. White
DOI:10.1016/0022-328x(89)87065-2
日期:1989.5
Selectivity in reductive elimination of ethane and RMe has been observed for benzyl and phenacyl complexes Me2RPd(L2)Br (L2 = bipy, phen), with product ratios dependent upon R and L2, and cationic intermediates detected by 1H NMR spectroscopy for oxidative addition of CD3I and phenacyl bromides to Me2Pd(L2). The crystal structure of fac-Me2(p-BrC6H4CH2)Pd(phen)Br has been determined.
Convenient synthetic routes to MePdII, Me2PdII, and Me3PdIV complexes. The crystal structure of the MePdII complex [MePd(2,2′-bipyridyl)(γ-picoline)]BF4
作者:Peter K. Byers、Allan J. Canty、Brian W. Skelton、Allan H. White