Formation of the first monoanion and dianion of stannole
M Saito, R Haga, M Yoshioka
Index: Saito, Masaichi; Haga, Ryuta; Yoshioka, Michikazu Chemical Communications, 2002 , # 9 p. 1002 - 1003
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Citation Number: 32
Abstract
First, we examined the synthesis of a stannole skeleton by the debrominative cyclization of 1. Treatment of 1 with 2 equiv of tert-butyllithium in THF at −90 °C gave a yellow solution. After usual workup, the mixture was chromatographed to gave bi(1,1-stannole) (58%) as yellow crystals together with stannole 3 (7%) (Scheme 2). Compound 2 was proved to have a symmetrical structure by its 13 C NMR, and its structure was finally established by X-ray structural analysis (Fig. ...
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