Reduction of Mono- and Diboranes(4)

减少单硼烷和乙硼烷(4)

• 批准号: 221758282
• 负责人: Professor Dr. Holger Braunschweig
• 金额: --
• 依托单位: Institut für Anorganische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/221758282?language=en
• 关键词: Reduction; Mono; Diboranes

Recent preliminary work has shown a handful of successful syntheses of boryl anions, diborenes and metal-free borylenes that offer much promise as general strategies towards these compounds. Among these are the use of organometallic species for stoichiometric reductions in homogeneous conditions, the use of new boron-substitution patterns and flexible bases for stabilisation of the boron centres, and the application of perhalogenated diboranes(4) for the preparation of boron-boron multiple bonding. These preparative approaches will be applied towards the synthesis of reduced boron species (boryl anions, diborenes and metal-free borylenes). In addition to the comprehensive characterisation of the target molecules, notably by ESR spectroscopy, cyclovoltammetry and guidance from DFT and TD-DFT calculations, we propose extensive reactivity studies of the target molecules. These reduced boron species will be utilised towards a number of synthetic goals, particularly for the synthesis of new boron-containing heterocycles. The suitability of synthesised compounds containing B-B multiple bonding as chromophores will be probed, as well as their use as synthons for electron-precise oligoborane species.

最近的初步工作表明，一些成功的合成硼基阴离子，diborenes和无金属的borylenes，提供了许多希望，作为对这些化合物的一般策略。其中包括在均匀条件下使用有机金属物质进行化学计量还原，使用新的硼取代模式和灵活的碱来稳定硼中心，以及应用全卤代乙硼烷（4）制备硼-硼多重键合。这些制备方法将被应用于合成还原硼物种（硼基阴离子，diborenes和无金属borylenes）。除了目标分子的全面表征，特别是通过ESR光谱，循环伏安法和DFT和TD-DFT计算的指导，我们提出了广泛的目标分子的反应性研究。这些还原的硼物质将被用于许多合成目标，特别是用于合成新的含硼杂环。将探讨合成的含有B-B多重键的化合物作为发色团的适用性，以及它们作为电子精确的低聚硼烷物种的取代基的用途。