Journal ArticleDOI
Synthesis of polysulfonates and polysulfonamides from 7,7‐dimethyl‐7H‐dibenzo[c,h]xanthene‐5,9‐disulfonyl chloride
John C. Wilson,F. Lynn Hamb +1 more
TLDR
The 5 and 9 positions of 7,7-dimethyl-7H-dibenzo[c,h]xanthene were found to be most active toward electrophilic sulfonation.Abstract:
Treatment of 7,7-dimethyl-7H-dibenzo[c,h]xanthene with chlorosulfonic acid leads to the formation of the mono-, di- and tetrasulfonyl chloride derivatives. The 5 and 9 positions of 7,7-dimethyl-7H-dibenzo[c,h]xanthene were found to be most active toward electrophilic sulfonation. Polysufonates and polysulfonamides prepared from 7,7-dimethyl-7H-dibenzo[c,h]xanthene-5,9-disulfonyl chloride exhibit glass transition temperatures above 200°C and show little weight loss at temperatures to 350°C.read more
Citations
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Journal ArticleDOI
Organocatalytic Synthesis of Polysulfonamides with Well-Defined Linear and Brush Architectures from a Designed/Synthesized Bis(N-sulfonyl aziridine)
TL;DR: In this paper, the National Natural Science Foundation of China (21801049) and the Opening Project of Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education.
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