Halodesilylation Route to 2,5-Difunctionalized 3,4-Dialkylsiloles and Their Derivatization to 2,2'-Bisilole

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• 作者：Shigehiro Yamaguchi ; Ren-Zhi Jin ; Shigeki Ohno ; and Kohei Tamao
• 刊名：Organometallics
• 出版年：1998
• 出版时间：November 9, 1998
• 年：1998
• 卷：17
• 期：23
• 页码：5133 - 5138
• 全文大小：163K
• 年卷期：v.17,no.23(November 9, 1998)
• ISSN：1520-6041

文摘

A new synthetic route to 2,5-difunctionalized 3,4-dialkylsiloles has been developed basedon the selective halodesilylation of 2,5-disilyl-1,1,3,4-tetraalkylsiloles. A series of 2,5-dihalosiloles having various alkyl groups on silicon and at the 3,4-positions were prepared.Some 2,5-dihalosiloles were further derivatized to unsymmetrical 2,5-difunctionalized siloleshaving boron or tin functionalities. A silole dimer, 2,2'-bisilole, was also prepared by theoxidative coupling using a copper complex starting from the 2,5-diiodosiloles. The crystalstructure and UV-vis absorption spectral data of the 2,2'-bisilole have been compared tothe 3,4-diphenyl analogue which we previously reported.