作者:Masao Hisatome、Jun Watanabe、Koji Yamakawa、Kozo Kozawa、Tokiko Uchida
DOI:10.1246/bcsj.68.635
日期:1995.2
out, and the expected bridged compound (13) was afforded. Subsequently, the construction of fourth and fifth bridges in [4][32](1,3,4)ferrocenophane (16) was attempted by applying the working hypothesis in order to obtain perbridged [4][34](1,2,3,4,5)ferrocenophane (5). Both bridging reactions occurred as expected, and the synthesis of 5 was achieved. The absorption spectrum of 5 showed d–d* absorption
对二茂铁的合成和结构研究的回顾导致推测,当要桥接的两个碳之间的“距离”大于 3.20 A 时,二茂铁丙酸的分子内取代会产生桥接产物。根据该预测,桥接[4][32](1,2,4)二茂铁-5-丙酸(“距离”:约3.5A)的反应进行,得到预期的桥连化合物(13)。随后,通过应用工作假设尝试在 [4][32](1,3,4)二茂铁 (16) 中构建第四和第五桥,以获得全桥 [4][34](1,2, 3,4,5)二茂铁 (5)。两个桥接反应都按预期发生,并实现了 5 的合成。5 的吸收光谱在异常短的波长(λmax = 345 nm;二茂铁,443 nm)下显示出 d-d* 吸收,这是我们所知的二茂铁衍生物中最短的值。5的结构通过X射线衍射法确定。C...