Organisch-Chemisches Institut, Universität Münster , Corrensstrasse 40, D-48149 Münster, Germany.
J Am Chem Soc. 2014 Jan 8;136(1):68-71. doi: 10.1021/ja4110396. Epub 2013 Dec 19.
Bis(trimethylsilylethynyl)diphenylaminoborane was reacted with the strong Lewis acid B(C6F5)3 at ambient temperature to give the borole 9 admixed with a small amount of its thermal follow-up product 12. Compound 9 was subsequently stabilized by adduct formation with pyridine (10). Treatment of bis(trimethylsilylethynyl)phenylborane with B(C6F5)3 gave the borole 14, which reacted with 3-hexyne to give the [4 + 2] cycloaddition product 15.
双(三甲基硅基)乙炔基二苯基氨基硼烷与强路易斯酸 B(C6F5)3 在环境温度下反应,生成硼杂环戊二烯 9,同时伴有少量其热后续产物 12。化合物 9 随后通过与吡啶(10)形成加合物而稳定。用 B(C6F5)3 处理双(三甲基硅基)乙炔基苯基硼烷得到硼杂环戊二烯 14,它与 3-己炔反应得到 [4 + 2]环加成产物 15。