Synthesis and Properties of Bora- and Boratacyclopropabenzenes

硼环丙苯（苯并苯）和硼环丙苯是由芳香六元和环状三元含硼环组成的有机化学的张力双环化合物。这类化合物只能在非常有限的范围内进行研究，因为在稳定基质之外的合成途径很长一段时间都不为人所知。由于双环框架的高环应变和硼中心的亲电性，期望对大量试剂具有有趣和高的反应性，并获得新的结构基序。在前期工作的基础上，在本项目框架内合成并研究了苯并苯芴的化学性质。我们希望通过选择合适的试剂进行反应，明确苯并溴烯的反应位点（硼中心、三元环、六元环）。这将为这类化合物的性质以及芳香性和环应变之间的相互作用提供全面的见解。

Boracyclopropabenzenes (benzoborirenes) and boratacyclopropabenzenes are strained bicyclische compounds of organobor chemistry that are comprised of an aromatic six membered and an annulated three membered boron containing ring. This class of compounds could only be investigated to a very limited extend because a synthetic access was not known for a long time outside of stabilizing matrices. Due to the high ring strain of the bicyclic framework and the electrophilicity of the boron center interesting and high reactivity towards a large number of reagents and access to novel structural motifs is expected. Based on our preliminary work, we synthesize benzoborirenes and study their chemical properties in the framework of the project. We wish to address specifically the reactive sites of the benzoborirenes (boron center, three-membered ring, six-membered ring) using selected reactions with suitable reagents. This will provide comprehensive insight into the properties of this class of compounds and the interplay between aromaticity and ring strain.