Synthesis of phosphonosulfonic acid building blocks as linkers for coordination polymers

Ten aromatic building blocks ( 8–11 , 23–28 ) containing phosphonic and sulfonic acid groups within one molecule were synthesized. Twofold nucleophilic substitution starting from 1,2,4,5-tetrakis(bromomethyl)benzene ( 1 ) followed by hydrolysis gave building blocks 8–11 . To obtain building blocks 2...

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Bibliographic Details
Published in:New journal of chemistry 2017, Vol.41 (17), p.8870-8876
Main Authors: Beyer, O., Homburg, T., Albat, M., Stock, N., Lüning, U.
Format: Article
Language:English
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Summary:Ten aromatic building blocks ( 8–11 , 23–28 ) containing phosphonic and sulfonic acid groups within one molecule were synthesized. Twofold nucleophilic substitution starting from 1,2,4,5-tetrakis(bromomethyl)benzene ( 1 ) followed by hydrolysis gave building blocks 8–11 . To obtain building blocks 23–28 , the respective bromobenzenesulfonic acids 13 , 16 , 18–20 and 22 had to be synthesized first. Palladium-catalysed cross coupling with triethylphosphite followed by hydrolysis gave the desired building blocks with phosphonic and sulfonic acid groups. Building block 9 was successfully used as a linker for the synthesis of a new La-based CP with the composition [La 2 (H 2 L) 1.5 (H 2 O) 4 ].
ISSN:1144-0546
1369-9261
DOI:10.1039/C7NJ01697B