Synthesis and Characterization of Lipophilic Organotins. Application to the Functionalization of Silica Gel
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- 作者：Marie-Laurence Dumartin ; Hicham El Hamzaoui ; Bernard Jousseaume ; Marie-Claude Rascle ; Thierry Toupance ; Hassan Allouchi
- 刊名：Organometallics
- 出版年：2007
- 出版时间：November 5, 2007
- 年：2007
- 卷：26
- 期：23
- 页码：5576 - 5580
- 全文大小：166K
- 年卷期：v.26,no.23(November 5, 2007)
- ISSN：1520-6041
文摘
The synthesis of the lipophilic docosyltri(hex-1-ynyl)tin was achieved in three steps according to twodifferent synthetic pathways. This compound reacted with nonporous silica to yield surface-modifiedsilica via the loss of the three alkynyl functionalities and the formation of Sibulk-O-Sn-C bonds. Thereactivity and the maximum chain loading reached were compared to those obtained with theheptadecafluorodecyltin analogue. The differences observed were rationalized in terms of electronic demandand cross-sectional area of the grafted chain, as evidenced by FTIR spectroscopy and X-ray crystalstructures of the precursors.