Australian Journal of Chemistry

Nuclear magnetic resonance spectra of α, β, β-trimethylstyrenes

GP Newsoroff, S Sternhell

Index: Newsoroff,G.P.; Sternhell,S. Australian Journal of Chemistry, 1966 , vol. 19, p. 1667 - 1675

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Citation Number: 10

Abstract

Abstract Nmr, data for 14 α, β, β-trimethylstyrenes are given. The aromatic ring shields the β- methyl group cis to it relative to the β-methyl group trans to it. The magnitude of this relative shielding is greatest with ortho-substituted benzene rings. The cisoid homoallylic coupling constants in α, β, β-trimethylstyrenes (and indeed in all examples available from the literature) are smaller than the transoid homoallylic coupling constants.