Novel Metalla-Aromatic Systems from Highly Strained Precursors

该项目的重点是研究芳香族化学研究的一个较新领域，金属苯，苯的过渡金属类似物，其中一个次甲基单元已被等瓣过渡金属片段取代。 在这个项目中进行的化学利用了一种方法，允许直接进入金属苯歧管使用环丙烷前体。 该项目的一个目标是证明这种方法提供了一种通用的合成路线，金属苯和价异构体。 这是首次对金属苯进行全面的研究，其中配体，环取代基和过渡金属中心将系统地变化。尤金俄勒冈州大学的哈利说。 Haley教授的研究兴趣是将过渡金属作为其他全碳系统的组成部分。 特别是，将进行苯结构的修饰。 苯是一类被称为具有芳香性的重要化学结构的原型结构，将进行碳-金属取代的影响，以探索其对芳香性的影响。 此外，各种新的有机金属结构将被制备，其性质是迄今为止未知的。

This project focuses on the study of a newer area of aromatic chemical research, metallabenzenes, transition metal analogues of benzene in which one of the methine units has been replaced by an isolobal transition metal fragment. The chemistry carried out in this project takes advantage of a method that allows direct entry into the metallabenzene manifold using a cyclopropane precursor. One goal of the project is to demonstrate that this method provides a general synthetic route to metallabenzenes and valence isomers. This represents the first comprehensive investigation of metallabenzenes where ligand, ring substituents, and transition metal centers will be systematically varied.With this Award, the Organic and Macromolecular Chemistry Program's Organic Synthesis Program supports the research of Professor Michael M. Haley of the University of Oregon, Eugene. Professor Haley's research interests are in the incorporation of transition metals as integral parts of otherwise all-carbon systems. In particular, modifications of the structure of benzene will be undertaken. Benzene is the prototype structure of an important class of chemical structure referred to as possessing aromaticity, and the effect of carbon-metal substitution will be carried out to explore its effects on aromaticity. In addition, a variety of new organometallic structures will be prepared whose properties are heretofore unknown.