B(C
<sub>6</sub>
F
<sub>5</sub>
)
<sub>3</sub>
/Amine‐Catalyzed C(sp)−H Silylation of Terminal Alkynes with Hydrosilanes: Experimental and Theoretical Studies
C(sp)−H silylation of a wide range of terminalalkynes with hydrosilanes by using a combination of B(C6F5)3 and an organic base such as triethylenediamine (DABCO). This protocol constitutes the first example of boron‐catalyzed C(sp)−H functionalization, offering a convenient route for the synthesis of a variety of alkynylsilanes. Experimental and computational studies have revealed that DABCO plays two
过渡金属催化的有机化合物的CH官能化已被证明是有机合成中有用的原子效率策略。相比之下,迄今为止,对于CHH功能化的基于主族元素的催化过程仍未得到充分研究。本文报道的是通过使用B(C 6 F 5)3的组合,各种末端炔烃与氢硅烷的催化C(sp)-H甲硅烷基化反应和有机碱,例如三乙二胺(DABCO)。该协议构成了硼催化的C(sp)-H功能化的第一个例子,为合成各种炔基硅烷提供了一条便捷的途径。实验和计算研究表明,DABCO在此催化转化中起着两个至关重要的作用(刘易斯碱和布朗斯台德碱)。
A Convenient Synthesis of Alkynylsilanes by Silylation of Copper(I) Alkynides
作者:Hikaru Sugita、Yasuo Hatanaka、Tamejiro Hiyama
DOI:10.1246/cl.1996.379
日期:1996.5
Alkynylation of chlorosilanes with copper(I) alkynides takes place smoothly in the presence of triphenylphosphine, N, N, N′, N′-tetramethylethylenediamine, or zinc powder to give a variety of alkynylsilanes in good yields.