Synthesis and Structure of Sterically Congested, New Alkenes, syn- and anti-9,9′-Bibenzonorbornenylidenes
Synthesis and Structure of Sterically Congested, New Alkenes, syn- and anti-9,9′-Bibenzonorbornenylidenes
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空间拥挤的新烯烃、顺式和反式 9,9-联苯降冰片亚烯的合成和结构
DOI：
10.1246/bcsj.73.2351
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发表时间：
2000
影响因子：
4
通讯作者：
J. Nakayama
中科院分区：
文献类型：
--
作者：
Y. Sugihara;Koichi Noda;J. Nakayama
以9-苯并降冰片烯酮为原料，合成了顺式和反式9，9 ′-二苯并降冰片烯亚基（1a）和（1b），并得到了纯品。通过核磁共振谱和X射线晶体学分析确定了它们的结构。作为导致1a和1b的前体的两个环硫化物的结构也通过X射线晶体学分析确定。
Sterically congested alkenes, syn- and anti-9,9′-bibenzonorbornenylidenes (1a) and (1b), were synthesized starting from 9-benzonorbornenone in good overall yields and were isolated in pure form. Their structures were elucidated by analyses of NMR spectra and established by X-ray crystallographic analysis. Structures of the two episulfides, which served as precursors leading to 1a and 1b, were also determined by X-ray crystallographic analysis.