121997-94-2Relevant academic research and scientific papers
Influence of Ortho Substituents on UV Spectra of Aryl Methyl Sulphoxides
Baliah, V.,Varadachari, R.
, p. 116 - 119 (2007/10/02)
The UV spectra of some ortho substituted aryl methyl sulphoxides are recorded and analysed.A comparison of the steric effects of ortho substituents on conjugation of CH3S(-), CH3SO(-) and CH3SO2(-) groups with the para substituents in the benzene ring has been made.The ortho substituents do not inhibit conjugation in the case of sulphones while they cause a marked inhibition in the case of sulphides and sulphoxides.The inhibition of conjugation of the CH3SO(-) group under the influence of ortho substituents is observed when the CH3SO(-) group acts both as an electron donor and as an electron acceptor.An explanation is offered for the observed steric effects.
