SCHEDULED MAINTENANCE
Orientation in 1,2-elimination from a carbanion in 1,2-bis-sulphides and phosphonates is directed by a phenyl group to give the alkene derived by the more rapid deprotonation at the site of phenyl substitution; the opposite orientation of elimination in bis-sulphones is due to steric repression of deprotonation.
P. J. Thomas and C. J. M. Stirling, J. Chem. Soc., Chem. Commun., 1978, 975 DOI: 10.1039/C39780000975
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