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6622998 
Journal Article 
Alkyl Bromide as Precursor of Initiating Dormant Species in Organocatalyzed Living Radical Polymerization 
Li, F; Xiao, L; Goto, A; , 
2018 
AMER CHEMICAL SOC 
WASHINGTON 
ACS Symposium Series 
1284 
365-378 
English 
WOS:000456766500018 
Alkyl bromide (R-Br) was transformed to alkyl iodide (R-I) in the presence of tributylamine and molecular iodine (I-2). This transformation was conducted in situ in organocatalyzed living radical polymerization; R-Br was used as a starting compound (precursor), and the R-I formed in situ was employed as an initiating dormant species for the polymerization. The polymer molecular weight (M-n being up to 31,000) and its distribution (M-w/M-n = 1.2-1.4) were well controlled up to high conversions (e.g., 80%) in the polymerizations of methyl methacrylate. The monomer scope encompassed functional methacrylates and styrene. Well-defined diblock copolymers were also obtained. R-Br is generally much more stable than R-I upon storage. The use of simple, stable, and inexpensive R-Br as precursors of the dormant species is an attractive feature of this system. 
Matyjaszewski, K; Gao, H; Sumerlin, BS; Tsarevsky, NV; 
978-0-8412-3323-2 
American-Chemical-Society Symposium on Controlled Radical Polymerization / 254th ACS National Meeting 
Washington, DC