77 ppm is a value worth remembering, since CDCl3 is a common solvent. It also has a distinctive pattern of three small equal peaks, and is sometime used as a reference instead of TMS.
While the peaks are in the order we would expect from induction effects, this pattern is not always the case:
The relative shielding of a gamma carbon - relative to an electronegative functional group, is apparently a common pattern in carbon NMR. I haven't yet learnt an explanation for it.
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