Activation of Acetyl Ligands through Hydrogen Bonds: A New Way to Platinum(II) Complexes Bearing Protonated Iminoacetyl Ligands
作者:Tim Kluge、Martin Bette、Tobias Rüffer、Clemens Bruhn、Christoph Wagner、Dieter Ströhl、Jürgen Schmidt、Dirk Steinborn
DOI:10.1021/om400812w
日期:2013.12.9
oxime–diacetyl platinum(II) complexes [Pt(COMe)2(2-pyCR═NOH)] (R = H, 4a; Me, 4b; Ph, 4c) and [Pt(COMe)2(HON═CR–CR═NOH)] (R/R = Me/Me, 5a; Ph/Ph, 5b; (CH2)4, 5c; NH2/NH2, 5d), respectively. The strong intramolecular O–H···O hydrogen bonds in these complexes give rise to an activation of the acetyl ligands for Schiff-base type reactions, thus forming with primary amines iminoacetyl platinum complexes [Pt(COMe
双核粗铂-β二酮[PT 2 (COME)2 H} 2(μ-Cl)的2 ](1)用2-吡啶基-官能monoximes并在加入NaOMe存在下屈服肟二乙酰基铂二肟反应(II)配合物[PT(COME)2(2-pyCR═NOH)](R = H,4A ;我,4B ; PH,图4c)和[PT(COME)2(HON═CR-CR═NOH)] (R / R = ME / Me中,图5a ; PH / PH,5B ;(CH 2)4,图5c ; NH 2 / NH 2,图5d), 分别。在这些配合物的强的分子内O - H···O氢键键引起的乙酰配体的席夫碱型反应的活化,从而与伯胺形成iminoacetyl铂络合物[PT(COME)(CMe═NHR') (2-pyCR═NO)](R / R'= H / BN,6A ; ME / BN,6B ; PH / BN,6C ; H / CH 2 CH 2 PH,6D ;