
Tetrahedron p. 16123 - 16130 (1997)
Update date:2022-08-29
Topics:
Lin, Shaw-Tao
Yang, Fu-May
Lin, Lee-Huey
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.
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