Preparation of Benzyne Complexes of Group 10 Metals by Intramolecular Suzuki Coupling of <i>o</i><i>rtho</i>-Metalated Phenylboronic Esters: Molecular Structure of the First Benzyne-Palladium(0) Complex
作者:Mikael Retbøll、Alison J. Edwards、A. David Rae、Anthony C. Willis、Martin A. Bennett、Eric Wenger
DOI:10.1021/ja0264091
日期:2002.7.1
A series of nickel(II) and palladium(II) aryl complexes substituted in the ortho position of the aromatic ring by a (pinacolato)boronic ester group, [MBr[o-C(6)H(4)B(pin)]L(2)] (M = Ni, L(2) = 2PPh(3) (2a), 2PCy(3) (2b), 2PEt(3) (2c), dcpe (2d), dppe (2e), and dppb (2f); M = Pd, L(2) = 2PPh(3) (3a), 2PCy(3) (3b), and dcpe (3d)), has been prepared. Many of these complexes react readily with KO(t)Bu
一系列镍 (II) 和钯 (II) 芳基配合物在芳环的邻位被(频哪醇)硼酸酯基团取代,[MBr[oC(6)H(4)B(pin)]L( 2)] (M = Ni, L(2) = 2PPh(3) (2a), 2PCy(3) (2b), 2PEt(3) (2c), dcpe (2d), dppe (2e), and dppb ( 2f); M = Pd, L(2) = 2PPh(3) (3a), 2PCy(3) (3b), and dcpe (3d)), 已经准备好了。许多这些配合物很容易与 KO(t)Bu 反应形成相应的苄配合物 [M(eta(2)-C(6)H(4))L(2)] (M = Ni, L(2) = 2PPh(3) (4a)、2PCy(3) (4b)、2PEt(3) (4c)、dcpe (4d);M = Pd,L(2) = 2PCy(3) (5b))。该反应可视为 Suzuki 交叉偶