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- Title
α-Amido Trifluoromethyl Xanthates: A New Class of RAFT/MADIX Agents.
- Authors
Destarac, Mathias; Ruchmann-Sternchuss, Juliette; Van Gramberen, Eric; Vila, Xavier; Zard, Samir Z.
- Abstract
Xanthates have long been described as poor RAFT/MADIX agents for styrene polymerization. Through the determination of chain transfer constants to xanthates, this work demonstrated beneficial capto-dative substituent effects for the leaving group of a new series of α-amido trifluoromethyl xanthates, with the best effect observed with trifluoroacetyl group. The previously observed Z-group activation with a O-trifluoroethyl group compared to the O-ethyl counterpart was quantitatively established with Cex = 2.7 (3–4 fold increase) using the SEC peak resolution method. This study further confirmed the advantageous incorporation of trifluoromethyl substituents to activate xanthates in radical chain transfer processes and contributed to identify the most reactive xanthate reported to date for RAFT/MADIX polymerization of styrene.
- Subjects
XANTHATES; STYRENE; POLYMERIZATION
- Publication
Molecules, 2024, Vol 29, Issue 10, p2174
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules29102174