OCHEM 3

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15 Terms

1
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Deshielded means

hydrogens are closer to EN atoms or pi bonds

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1 ppm

alkyl (primary) —CH3

3
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2-2.5 ppm

allylic

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3.5 ppm

alcohol, ether

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6 ppm

vinylic

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7 ppm

aryl

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10-12 ppm

aldehyde/carboxylic acid

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What are the exceptions to the n+1 rule?

alcohol hydrogens (-OH) and amine hydrogens (-NH-) will form a broad singlet

9
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Which proton equivalence have different chemical shifts?

Heterotopic (CI) and Diastereotopic

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Which proton equivalence has the same chemical shifts?

Homotopic (same) and Enantiotopic

11
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On alkenes it treats the neighbors as?

two separate thing resulting in a doublet of doublets

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15
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