- The catalytic olefination reaction of aldehydes and ketones with CBr 3CF3
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The new approach of catalytic olefination reaction (COR) has been used to convert aromatic and aliphatic aldehydes and ketones to 2-bromo-3,3,3- trifluoroprop-1-enes by the treatment of corresponding hydrazones with CBr 3CF3 under copper(I) catalysis conditions. The reaction proceeds stereoselectively, the target alkenes were obtained in good yields.
- Nenajdenko, Valentine G.,Varseev, Georgy N.,Shastin, Alexey V.,Balenkova, Elisabeth S.
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p. 907 - 913
(2007/10/03)
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- Polymer chemistry. Part V. γ-Ray induced telomerisation reactions involving 1,1-difluoroethene and hexafluoropropene
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Telomerisation reactions have been investigated for the alkenes 1,1-difluoroethene (5) and hexafluoropropene (3) with the telogens CF2Br2 (1), CF3CFBr2 (8) and CF3CBr3 (9), as a means of preparing telomers and co-telomers.The efficiency of chain transfer increases as 1 /= 8 9.Surprinsingly, co-telomerisations of 5 with 3 occurred more efficiently than the corresponding telomerisations with 5 alone.The effects of solvent are described. - Keywords: Telomerisation; γ-Ray induction; 1,1,-Difluoroethene; Hexafluoropropene; NMR spectroscopy; Mass spectrometry
- Chambers, Richard D.,Proctor, Lee D.,Caporiccio, Gerardo
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p. 241 - 248
(2007/10/02)
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