ChemInform Abstract: Reaction of 3,3,3‐Trifluoro‐1‐propene (II) with Bromoform (I) and Methylene Bromide (XI).

Random and sequential radical cotelomerizations of 3,3,3‐trifluoropropene (H2CCHCF3) with vinylidene fluoride (F2CCH2)

“…[7][8][9][10][11][12][13][14][15][16][17][18][19] In addition, Vasil'eva's team 13 even proposed mechanisms of formation of unexpected telomers and determined various chain transfer constants of telogens showing that, in some cases, the transfer to the telogen is more efficient than the radical chain growth. 10,16,17 Other transfer agents have been used such as silanes, phosphonates, disulfides or hydrogen bromide yielding the monoadduct. 3 Recently, the Great Lakes/Chemtura Company has patented the telomerization of TFP with either perfluoroalkyl iodides 20 or other non-fluorinated chain-transfer agents 21 and their further chemical modifications to get useful surfactants, coating materials, or block copolymers.…”

Original fluorinated surfactants potentially non-bioaccumulable

“…Though the telomerizations of TFP with various chlorinated or brominated chain transfer agents were achieved by Vasil'eva et al [41][42][43][44], Terent'ev et al [45], or Zamyslov et al [46,47], few works have been reported on the radical cotelomerization of TFP with perfluoroalkyliodides. [48][49][50] Recently, we revisited this reaction to produce TFP telomers with longer chain lengths that those achieved by Haszeldine [48,49] (ca.…”

Telomerization of 3,3,3-Trifluoroprop-1-ene and Functionalization of Its Telomers

“…(Insert Table 2) The product mixture was analyzed by GC and, after distillation, the fractions were characterized by 1 H, 19 F and 13 C NMR. The yield of mono-(n=1) and diadducts (n=2), of normal and reverse-addition product ratios as a function of reaction conditions are also shown in Table 2.…”

“…The third step consisted of a deiododeacetatization of these iodo-acetates into R F -(C 3 H 3 F 3 ) n CH 2 -CH=CH 2 (C,n) giving 50-80 % yields. All the intermediates were characterized by 1 H, 19 F and products by (Table 1). Various ways of initiating the telomerization were investigated.…”

“…Vassileva et al [14][15][16][17][18][19] used different telogens such as C 6 H 5 CH 2 Cl, CBr 4 , CHBr 3 , CH 2 Br 2 (but not CHCl 3 and CBrCl 3 ) with the initiating system Fe(CO) 5 -DMF or hexamethylphosphoramide (HMPA) ( Table 1). In the presence of Fe(CO) 5 -DMF, a radical mechanism was proved to take place and chain transfer constants of the telogens involved in telomerizations were determined.…”