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How the following transfrormations can b...

How the following transfrormations can be brought about ? Name only the reagents .
a) Cyclohexanol to cyclohexanone
b) Allyl alcohol to propenal
c) p - Fluorotoluene of pfluorobenzaldehyde

Text Solution

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(a) Potassium dichromate in acidic medium
b) `C_5H_5overset(+)NHCrO_3Cl^(-)` (Pyridinium chlorochromate )
c) `CrCO_3` in the presence of acetic anhydride
i) `CrO_2Cl_2 " " ` ii) `H_2O`
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