七氟-2-碘丙烷,iC 3 F 7 I,是与1,1-二氟乙烯和四氟乙烯进行端粒化反应时非常有效的链转移剂。报告了CF 3 I,C 2 F 5 I和nC 3 F 7 I与1,1-二氟乙烯以及nC 3 F 7 I与四氟乙烯的其他端粒化反应,并讨论了碘化物作为链转移剂的相对效率。端粒碘化物已覆盖到某些碳氟聚合物体系的有用模型中。顺式-(CF 3)2的立体定向合成报告了CF·CHCHF。
Fluoro-alkene forming eliminations using antimony pentafluoride
作者:Glenn C. Apsey、Richard D. Chambers、Paolo Odello
DOI:10.1016/0022-1139(96)03389-1
日期:1996.4
Reactions involving perfluoro-2-iodopropane and 1,1-difluoroethene, give telomers (1) and these telomeriodides are coupled to give [(CF3)2CF(CH2CF2)n−]2 (2). Fluorodeiodination gives a series of compounds (CF3)2CF(CH2CF2)nF (3). Lewis acid-induced eliminations from these systems is very effective using SbF5 and cyclisations can also be induced by this methodology. A series of conjugated polymers is
Hydrochlorofluorocarbons having a tertiary structure and OH rate
申请人:Allied-Signal Inc.
公开号:US05146015A1
公开(公告)日:1992-09-08
The present invention provides a class of hydrochlorofluorocarbons having a tertiary structure, 5 carbon atoms, 1 chlorine atom, 6 to 8 fluorine atoms, and OH rate constants from about 8 to about 15 cm.sup.3 /molecule/sec.times.10.sup.-14. The hydrochlorofluorocarbons are useful as solvents and blowing agents.
Partially fluorinated alkanols having a tertiary structure
申请人:Allied-Signal Inc.
公开号:US05254755A1
公开(公告)日:1993-10-19
Novel partially fluorinated alkanes having the Formula: ##STR1## wherein each R is the same or different and is selected from the group consisting of CF.sub.3, CHF.sub.2, CH.sub.2 F, and CH.sub.3 CF.sub.2, and R' is an alkyl or fluoroalkyl group having 1 to 6 carbon atoms have utility as solvents in a variety of industrial cleaning applications including cold cleaning, dry cleaning, and defluxing of printed circuit boards.
Method of cleaning using hydrochlorofluorocarbons having a tertiary
申请人:AlliedSignal Inc.
公开号:US05264044A1
公开(公告)日:1993-11-23
The present invention provides a class of hydrochlorofluorocarbons having a tertiary structure, 5 carbon atoms, 1 chlorine atom, 6 to 8 fluorine atoms, and OH rate constants from about 8 to about 15 cm.sup.3 /molecule/secx10.sup.-14. The hydrochlorofluorocarbons are useful as solvents and blowing agents.
Partially fluorinated alkanes having a tertiary structure
申请人:Allied-Signal Inc.
公开号:US05059728A1
公开(公告)日:1991-10-22
Novel partially fluorinated alkanes having the Formula: ##STR1## wherein each R is the same or different and is selected from the group consisting of CF.sub.3, CHF.sub.2, CH.sub.2 F, and CH.sub.3 CF.sub.2, and R' is an alkyl or fluoroalkyl group having 1 to 6 carbon atoms with the proviso that when each R is CF.sub.3, R' is not CF.sub.3 (CF.sub.2).sub.2 -, CH.sub.3 CF.sub.2 -, or CF.sub.3 have utility as solvents in a variety of industrial cleaning applications including cold cleaning, dry cleaning, and defluxing of printed circuit boards.