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Give names of the reagents to bring abou...

Give names of the reagents to bring about the following transformations :
(i) Pentan - 1 - ol to pentanal,
(ii) Allyl alcohol to propenal,
(iii) But -2- ene to ethanal and
(iv) But - 1 - yne to butanone .

Text Solution

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(i) Pyridiniumchlorochromate,
`C_5H_5NH^(+)CrO_3Cl^(-) ("PCC")`
(ii) Pyridinium chlorochromate (PCC)
(iii) Ozone , water and zinc dust
(iv) 40% `H_2SO_4 and ` 1% `HgSO_4`
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