Substituent dependent cyclization reactions of 1,1'‐bis(alkynyl) ferrocenes with the (C6F5)BH2·SMe2hydroboration reagent
Substituent dependent cyclization reactions of 1,1'‐bis(alkynyl) ferrocenes with the (C6F5)BH2·SMe2hydroboration reagent
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1,1â双（炔基）二茂铁与 (C6F5)BH2·SMe2 硼氢化试剂的取代基依赖性环化反应
DOI：
10.1002/ejic.202100838
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发表时间：
2021
影响因子：
2.3
通讯作者：
G. Erker
中科院分区：
文献类型：
--
作者：
K. Škoch;C. G. Daniliuc;G. Kehr;G. Erker
1，1‘-双(叔丁基乙炔)二茂铁(4a)与(C6F5)BH2⋅ SMe2试剂反应，得到含硼[3]二茂铁5。它与二甲基异氰化物反应，插入到硼-碳键中，得到含[4]二茂铁衍生物8的扩大环。1，1‘-双(三甲基硅乙烯基)二茂铁(4b)与(C6F5)BH_2发生了区域选择性相反的加氢反应。这导致了含有大环桥接双二茂铁体系10的16元二聚双硼的形成。
The reaction of 1,1'‐bis(tert‐butylethynyl)ferrocene (4a) with the (C6F5)BH2⋅ SMe2reagent results in two‐fold hydroboration to give the boron containing [3]ferrocenophane5. It reacts with xylylisocyanide by insertion into the boron‐carbon bond to give the ring enlarged boron containing [4]ferrocenophane derivative8. 1,1'‐Bis(trimethylsilylethynyl)ferrocene (4b) undergoes the hydroboration reaction with (C6F5)BH2with inverted regioselectivity. This results in the formation of the 16‐membered dimeric bis‐boron containing macrocyclic bridged bis‐ferrocene system10.