- Synthesis of perfluoro[2.2]paracyclophane
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(Chemical Equation Presented) A synthesis of perfluoro[2.2]paracyclophane has been sought ever since the partially fluorinated octafluoro[2.2]- paracyclophane (AF4) was prepared and its chemistry studied. This compound has now been prepared in 39% yield from the precursor, 1,4-bis(chlorodifluoromethyl) -2,3,5,6-tetrafluorobenzene by its reaction with Zn when heated in acetonitrile at 100°C. Two preparations of the precursor, first from 1,4-dicyano-2,3,5,6- tetrachlorobenzene and an improved method beginning from 1,2,4,5- tetrachlorobenzene, are also described as are key comparisons to our related synthesis of AF4.
- Dolbier Jr., William R.,Xie, Puhui,Zhang, Lianhao,Xu, Wei,Chang, Ying,Abboud, Khalil A.
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p. 2469 - 2472
(2008/09/19)
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- Synthesis of tetrachloroisophthalic and -terephthalic aldehydes and stable bis(nitrile oxides) based on them
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A new route for the synthesis of 2,4,5,6-tetrachloroisophthalic and 2,3,5,6-tetrachloro-terephthalic aldehydes from the corresponding tetrachlorobenzenes was developed. The method involves dichloromethylation of the initial compounds with chloroform in th
- Belen'kii,Gromova,Lichitskii,Krayushkin
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p. 101 - 104
(2007/10/03)
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