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4-Aminophenol
(123-30-8)
1HNMR
arom-H signals appear at 6.4
13 C NMR
SEE WHAT HAPPENS WHEN A NITRO GP APPEARS
4-Nitro-1,3-phenylenediamine
(5131-58-8)
1HNMR
arom-H signal of ortho nitro is at 7.7 downfield than the earlier
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4-NITROPHENOL SODIUM SALT
SYMMETRICAL MOLECULE,all arom-H are similar
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The protons ortho and para to electron donating and electron withdrawing substituents show distinct upfield and downfield shifts.
4-Nitroacetanilide
The protons ortho and para to electron donating and electron withdrawing substituents show distinct upfield and downfield shifts.
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