Shimon Tanaka, Yoshio Furusho and Takeshi Endo Radical ring-opening polymerization of five-membered cyclic vinyl sulfone using p-toluenesulfonyl halides Journal of Polymer Science Part A: Polymer Chemistry 51
Radical ring-opening polymerization of a five-membered cyclic vinyl sulfone monomer, 2-vinylthiolane-1,1-dioxide (VTDO), proceeded in bulk by use of p-toluenesulfonyl iodide (TosI) or bromide (TosBr) as a radical initiator. When 10 mol % of TosBr was used, the isolated yield of PVTDO reached 49%. The PVTDO synthesized using TosBr had an Mn of 4100 with a relatively narrow, monomodal distribution of molecular weight of 1.8.
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