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Question

Chemistry Question on Chemical Reactions

Identify the correct reagents that would bring about the following transformation.
correct reagents that would bring about the following transformation. correct reagents that would bring about the following transformation.

A

(i) H2O/H+
(ii) CrO3

B

(i) BH3
(ii) H2O2/OHH_2O_2/O^\ominus H
(iii) PCC

C

(i) BH3
(ii) H2O2/OHH_2O_2/O^\ominus H
(iii) alk. KMnO4

D

(iv)H3OH_3O^\oplus
(i) H2O/H+
(ii) PCC

Answer

(i) BH3
(ii) H2O2/OHH_2O_2/O^\ominus H
(iii) PCC

Explanation

Solution

- BH3BH_3 performs hydroboration of the double bond.
- H2O2/OHH_2O_2/OH^- oxidizes the boron intermediate to an alcohol.
- PCC selectively oxidizes the alcohol to an aldehyde.