Question

What is PDC & PCC? For which process it is used?

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Answer 1

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Both PDC and PCC can convert alcohols into aldehydes and ketones, especially in dichloromethane at room temperature. PDC is less acidic than PCC and is therefore more suitable for the oxidation of acid-sensitive substrates.

Characteristics :-

• The oxidation of alcohols by PCC (Pyridinium Chlorochromate) or PDC (Pyridinium Dichromate) works under mild conditions and can be used for compounds containing unstable functional groups. This method is useful to synthesize aldehydes, whereas the Jones and the Sarett-Collins oxidations are better suited to the synthesis of ketones.

• PCC is acidic, therefore can react with unstable functional groups. On the other hand, PDC is closer to neutral.

• In DMF, the reaction of primary alcohols with PDC (except for ally alcohols) leads to complete oxidation to carboxylic acids.

• These chromium-based reagents are used less frequently today with the development of milder and less toxic oxidation reagents..

Answer 2

Answer:

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