IAN Amines: Chiral <i>C</i><sub>2</sub>-Symmetric Zirconium(IV) Complexes from Readily Modified Axially Chiral <i>C</i><sub>1</sub>-Symmetric β-Diketimines
作者:Sarah B. Cortright、John C. Huffman、Ryan A. Yoder、Joseph N. Coalter、Jeffrey N. Johnston
DOI:10.1021/om049897p
日期:2004.5.1
A general synthesis of β-diketimines derived from Isoquinoline and AminoNaphthalene components (IAN amines) is reported. Beginning from inexpensive 2-naphthol and isoquinoline, the sequence of reactions leading to R-IAN amines is convergent, short, and high-yielding. Several new derivatives are reported (e.g., R = Bn, iPr, tBu, Ph, 2,6-Me2Ph, 2,6-iPr2Ph, 2-Np). All of these were complexed to zirconium(IV)
β-diketimines的一般合成衍生自我异喹啉和甲美浓Ñ aphthalene组分(IAN胺)被报告。从廉价的2-萘酚和异喹啉开始,导致R-IAN胺的反应顺序是收敛的,短的和高产率的。报道了几种新的导数(例如,R = Bn,iPR,ŤBu,Ph,2,6-Me 2 Ph,2,6- iPr 2 Ph,2-Np)。所有这些都通过与Zr(NMe 2)4转氨作用而与锆(IV)络合,并且在所有情况下,在25°C时立即形成1:1 R-IAN:Zr络合物。除了严重的空间位阻(iPr-IAN和2,6-Me 2 Ph),相应的2:1 IAN:Zr络合物在25至100°C的甲苯温度下形成。1 IAN:所有2中的特征保守的Zr配合物是非对映选择性的一个有利于显着程度Ç 2 -对称的双(β-二亚胺基)异构体轴承顺-NMe 2和顺式-吡啶基配体。尽管所有复杂性都是从rac进行的-IAN,所得复合物仅由同手性配体组