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Synfacts 2008(11): 1157-1157  
DOI: 10.1055/s-0028-1083475
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

Octacarboxy Spherosilicate

Contributor(s):Timothy M. Swager, Fei Wang
H. Liu*, S.-I. Kondo, N. Takeda, M. Unno*
Gunma University, Japan
Synthesis of Octacarboxy Spherosilicate
J. Am. Chem. Soc.  2008,  130:  10074-10075  
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Publication History

Publication Date:
23 October 2008 (online)

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Key words

spherosilicate - molecular cages - siloxanes

Significance

Reported is an efficient method to synthesize octacarboxy spherosilicate, OCPDS. It was converted from ODMPS by bromination and then hydrolysis in the presence of AgNO3 and formic acid. The structure of ODMPS and OCPDS were both confirmed by FT-IR, ¹H NMR, ¹³C NMR, ²9Si NMR, ESI-MS, and elemental analysis.

Comment

The cage siloxanes have potential applications in the development of novel hybrid materials, homogeneous silica supports, organo­metallic catalyst carriers and anion receptors. The reactive carboxyphenyl functional group opens the door to more attractive derivatives of the cage siloxanes.

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