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• 2366-75-8 5-tert-butyl-2-fluoro-1,3-dimethylbenzene 

Relevant academic research and scientific papers

syn-ar,ar'-Difluorometacyclophanes: Strong 19F,19F Spin-Spin Interactions Transmitted through Space

The close approach of the fluorine nuclei in the difluorinated syn-metacyclophanes 1, 2 and their analogues 3, 4 leads to strong 19F,19F spin-spin interactions which obey a through-space mechanism.The geometries of 1-4 were estimated by MM2 mol

Metacyclophanes and Related Compounds. Part 16. Preparation of 8-Fluoro-t-butylmetacyclophanes and their Treatment with Aluminium Chloride-Nitromethane in Benzene

The preparation of 8-fluoro-t-butylmetacyclophanes (5) are described.Dithiametacyclophane (3) and metacyclophane bis(sulphones) (4) were obtained as a mixture of transoid and cisoid conformers, but metacyclophanes (5) were exclusively obtained as the transoid conformer after pyrolysis of the sulphones (4).AlCl3-MeNO2-Catalyzed trans-t-butylation of 8-fluoro-16-methyl-5,13-di-t-butylmetacyclophane (5a) in benzene under a variety of conditions faild to give 8-fluoro-16-methylmetacyclophane (32) but, instead, the tetrahydropyrenes (33) and/or (34) were obtained depending upon the conditions used.Internally substituted metacyclophanes were isomerized to the strainless metacyclophanes and these were then oxidized to the tetrahydropyrene (33).