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Deshielded means
hydrogens are closer to EN atoms or pi bonds
1 ppm
alkyl (primary) —CH3
2-2.5 ppm
allylic
3.5 ppm
alcohol, ether
6 ppm
vinylic
7 ppm
aryl
10-12 ppm
aldehyde/carboxylic acid
What are the exceptions to the n+1 rule?
alcohol hydrogens (-OH) and amine hydrogens (-NH-) will form a broad singlet
Which proton equivalence have different chemical shifts?
Heterotopic (CI) and Diastereotopic
Which proton equivalence has the same chemical shifts?
Homotopic (same) and Enantiotopic
On alkenes it treats the neighbors as?
two separate thing resulting in a doublet of doublets