Magnetic Resonance in Chemistry p. 273 - 276 (1989)
Update date:2022-08-28
Topics:
Ito, Hiroshi
Renaldo, Alfred F.
Johnson, Robert D.
Ueda, Mitsuru
Monosubstituted cyclohexanes were synthesized by addition of a cyclohexyl radical to olefins bearing different substituents at the α-position.Six distinct methylene 13C resonances were observed, indicating that the methylene carbons located at the 2 and 6 positions and at 3 and 5 positions are not magnetically equivalent.This magnetic non-equivalence (anisochronism) observed in the monosubstituted cyclohexanes is due to the introduction of an asymmetric center β to the prochiral C-1 ring carbon atom. KEY WORDS Anisochronism Magnetic non-equivalence Cyclohexyl adducts Mercury method
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