Shape-Persistant Macrocycles with Terpyridine Units: Synthesis, Characterization, and Structure in the Crystal
作者:Christian Grave、Dieter Lentz、Andreas Schäfer、Paolo Samorì、Jürgen P. Rabe、Peter Franke、A. Dieter Schlüter
DOI:10.1021/ja034029p
日期:2003.6.1
The synthesis of a variety of shape-persistent macrocycles with either one (1a-d, 2) or two (opposing) terpyridine units (3, 4, 5a-c) and inner diameters of up to 2 nm is described. The sequences are mainly based on transition metal cross-coupling reactions and, whenever appropriate, compared with one another regarding their respective efficiency. Typical overall yields and amounts prepared range from
描述了具有一个 (1a-d, 2) 或两个 (相对的) 三联吡啶单元 (3, 4, 5a-c) 和内径高达 2 nm 的各种形状持久性大环的合成。这些序列主要基于过渡金属交叉偶联反应,并在适当的时候就它们各自的效率相互比较。典型的总产率和制备量范围分别为 8% (4) 至 27% (3) 和 25 mg (1a) 至 290 mg (1b)。对于目标循环的溶解性和加工,所有前体都已经用柔性侧链(己氧基或己氧基甲基)修饰。循环的表征基于 MALDI-TOF 质谱、2D 核磁共振光谱和/或低温单晶 X 射线衍射。它们在晶体中的堆积是根据侧链的数量和长度来讨论的。循环 1d 在溶液-HOPG 界面被物理吸附成有序结构,并通过扫描隧道显微镜 (STM) 进行研究。