Question

Name the reagents whch are used in the following conversions :
(i) A primary alcohol to an aldehyde
(ii) Butan-2-one to butan-2-ol
(iii) Phenol to 2, 4, 6-tribromophenol

Answer 1

(i) Pyridinium chlorochromate (PC C) a complex of chromium trioxide with pyridine and HCl
`CH_(3)-CH=CH-CH_(2)OH overset("PCC")rarrCH_(3)-CH=CH-CHO`
(ii) `Ni//H_(2) " Or " LiAl H_(4) " Or " NaBH_(4)`
(iii) Aqueous bromine or bromine water