Process for the preparation of derivatives of octafluoro-[2,2] paracylophane
申请人:Specialty Coating Systems, Inc.
公开号:US06392097B1
公开(公告)日:2002-05-21
Processes for the preparation of parylene dimers, and more particularly to processes for the preparation of derivatives of octafluoro-[2,2]paracylophane, otherwise known as AF4.
The First Synthesis and Characterization of Both Diastereomers of a Di[2.2]paracyclophane: 4,4‘-Bis(1,1,2,2,9,9,10,10-octafluoro[2.2]paracyclophane)
作者:A. J. Roche、J.-X. Duan、W. R. Dolbier,、K. A. Abboud
DOI:10.1021/jo0157775
日期:2001.10.1
of two [2.2]paracyclophane units linked through a single 4,4' bond are described. Both the meso and d,l diastereomers of 4,4'-bis(octafluoro[2.2]paracyclophane) have been prepared via a palladium-catalyzed reductive homocoupling reaction by copper, producing a 3:2 ratio of meso and d,l diastereomers. A similar reductive homocoupling of pseudo-o-iodotrifluoromethyloctafluoro[2.2]paracyclophane gave only
Electrophilic Substitution of 1,1,2,2,9,9,10,10-Octafluoro[2.2]paracyclophane
作者:Alex J. Roche、William R. Dolbier
DOI:10.1021/jo9910536
日期:1999.12.1
Nitration of octafluoro[2.2]paracyclophane (OFP) provides an entry into the synthesis of a series of II monosubstituted OFPs, including the nitro, amino, chloro, bromo, iodo, hydroxy, and trifluoromethyl compounds. The NMR, mass spectrometric, and UV spectral properties of all of these derivatives are presented and discussed, and they are compared with those of its hydrocarbon analogue, [2.2]paracyclophane.
Multiple Electrophilic Substitution of 1,1,2,2,9,9,10,10-Octafluoro[2.2]paracyclophane
作者:Alex J. Roche、William R. Dolbier
DOI:10.1021/jo000436x
日期:2000.8.1
Synthetic methods for introduction of two substituents into the rings of octafluoroparacyclophane are presented. Nitration gives three isomers with nitro substituents on different rings: pseudoortho, pseudo-mete, and pseudo-para, in equal amounts. These dinitro compounds are shown to be precursors of a variety of other disubstituted OFF derivatives. Methods of characterization of isomeric disubstituted OFPs are extensively discussed, and the H-1 and F-19 NMR spectra of these derivatives are analyzed explicitly.