Preparation of 3e,4,5,6e,7,8-Hexahydro[2.2]paracyclophane

Article abstract of DOI:10.1016/S0040-4020(97)10031-X

3e,4,5,6e,7,8-Hexahydro[2.2]paracyclophane (11) was prepared through a coupling reaction to form dithiacyclophane, oxidation to yield the sulfone followed by the pyrolysis. It is noteworthy that the methine hydrogen in the rigid structures 5 and 11 toward to the center of the benzene ring leading to high field shifts resonance appear at δ -0,72 and -2.32 ~ -2.41.