锡诺尔二价阴离子的逐步氧化。

Stepwise oxidation of the stannole dianion.

作者信息

Haga Ryuta, Saito Masaichi, Yoshioka Michikazu

机构信息

Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama-city, Saitama, 338-8570, Japan.

出版信息

Chemistry. 2008;14(13):4068-73. doi: 10.1002/chem.200800010.

DOI:10.1002/chem.200800010

PMID:18348151

Abstract

Tin oxidation of stannole dianion 1 with 1.3 equivalents of oxygen gave terstannole-1,3-dianion 3. The non-aromatic nature of 3 was confirmed by X-ray crystallographic analysis. Treatment of 1 with 1,2-dibromoethane (3 equiv) gave poly(1,1-stannole) 4, the formation of which was proven by reduction of 4 with lithium to revert to the starting dianion 1. Reaction of 1 with 1,2-dibromoethane (3 equiv) in the presence of phenyllithium gave phenyl-capped ter(1,1-stannole) 7. The electronic absorption spectra of newly obtained stannoles were also measured.

摘要

用1.3当量的氧气对锡环戊二烯二价阴离子1进行锡氧化反应，得到三锡环戊二烯-1,3-二价阴离子3。通过X射线晶体学分析证实了3的非芳香性。用1,2-二溴乙烷（3当量）处理1得到聚（1,1-锡环戊二烯）4，用锂将4还原为起始二价阴离子1证明了其形成。在苯基锂存在下，1与1,2-二溴乙烷（3当量）反应得到苯基封端的三（1,1-锡环戊二烯）7。还测量了新得到的锡环戊二烯的电子吸收光谱。