New fluorinated polymers containing the pentafluorothio group have been prepared from SF5Br and the appropriate fluoroolefin under reaction temperatures of 90±5°C and autogeneous pressures of up to 90 atmosphere for periods of four days to two weeks. With ethylene, FCH2CH2Br and SF5CH2CH2Br were formed. A new monomer addition product, SF5CF2CF2Br, is also reported for the first time.
The reaction of CF3O2 with haloalkanes (RX, XI, Br) in the presence of silver fluoride was studied as a means for preparing novel reactive polyfluoroalkoxysulfonyl fluorides. The following compounds have been prepared and characterized: ROCF2CF(CF3)SO2F, where R is CH2CHCH2, CF2CFCH2CH2, (CF3)2CFCH2CH2, CH3, CH2CBrCH2, SF5CH2CH2, CH2, FSO2CF(CF3)CF2OCH2. Infrared, mass and nmr spectra are presented
A convenient and efficient method for incorporation of pentafluorosulfanyl (SF5) substituents into aliphatic compounds
作者:William R. Dolbier、Samia Aït-Mohand、Tyler D. Schertz、Tatiana A. Sergeeva、Joseph A. Cradlebaugh、Akira Mitani、Gary L. Gard、Rolf W. Winter、Joseph S. Thrasher
DOI:10.1016/j.jfluchem.2006.05.003
日期:2006.10
Both SF5Cl and SF5Br undergo smooth, high yield addition to alkenes and alkynes under the mild free radical chain reaction conditions of triethylborane initiation at low temperature, although the SF5Br chemistry is somewhat limited by its competing high electrophilic reactivity with electron rich alkenes. The SF5Cl addition reaction is relatively insensitive to a wide variety of non-allylic functionalities. (c) 2006 Elsevier B.V. All rights reserved.
One-pot syntheses of 1,2,3-triazoles containing a pentafluorosulfanylalkyl group via click chemistry
作者:Yangen Huang、Gary L. Gard、Jean’ne M. Shreeve
DOI:10.1016/j.tetlet.2010.10.149
日期:2010.12
1,4-Disubstituted 1,2,3-triazoles containing a pentafluorosulfanylalkyl group were synthesized in good to excellent yields (57-91%) by the click cycloadditions of in situ generated SF5-alkyl azides with aromatic and aliphatic alkynes. Nucleophilic substitution of the SF5 group was observed for the first time in a bench-top reaction. (C) 2010 Elsevier Ltd. All rights reserved.