Show how resonance interaction of the electron pairs on the oxygen with the ring electrons can

Show how resonance interaction of the electron pairs on the oxygen with the ring π electrons can account for the fact that the chemical shift of protons H^a in p-methoxytoluene is smaller than that of protons H^b in spite of the fact that the oxygen has a greater electronegativity than the methyl carbon.

Transcribed Image Text:

8 6.8 CH₂0- Ha Hb - CH3 87.2