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Abstract:
[2.2]Paracyclophanes 1–4 containing tetracyanobenzene (TCNB) units opposite to different electron donor components have been synthesized via the corresponding substituted dithia[3.3]paracyclophanes 8, 10, 12, and 14. For the pyrolysis of the disulfones 9, 11, 13, and 15 derived therefrom, due to the very low volatility of these compounds, a modification of the conventional pyrolysis method had to be used. – The syntheses of [3.3]paracyclophanes 16–18 via the dithia[4.4]paracyclophanes 19, 21, and 23 and the corresponding disulfones 20, 22, and 24 are described. [4.4]Paracyclophanes 32 and 33 were prepared from the respective dithia[5.5]paracyclophanes 34 and 36 by pyrolysis of the disulfones 35 and 37. – As cyclisation components for the synthesis of the mentioned dithiaparacyclophanes several new 1,4‐bis(mercaptoalkyl)benzenes with electron‐donating substituents were prepared as was the TCNB derivative 5.
