Write a note on the preparation of primary alcohol from aldehyde by reduction reaction.
(N/A) Aldehydes are reduced to primary alcohols by using reducing agents like sodium borohydride $(NaBH_4)$ or lithium aluminium hydride $(LiAlH_4)$,as well as by catalytic hydrogenation.
General reaction:
$RCHO + 2[H] \xrightarrow{NaBH_4 / LiAlH_4 / (Pd/H_2)} RCH_2OH$
Example:
$(i) CH_3CHO + 2[H] \xrightarrow{NaBH_4 / LiAlH_4 / (Pd/H_2)} CH_3CH_2OH$
$(\text{Ethanal}) \qquad (\text{Ethanol})$
General reaction:
$RCHO + 2[H] \xrightarrow{NaBH_4 / LiAlH_4 / (Pd/H_2)} RCH_2OH$
Example:
$(i) CH_3CHO + 2[H] \xrightarrow{NaBH_4 / LiAlH_4 / (Pd/H_2)} CH_3CH_2OH$
$(\text{Ethanal}) \qquad (\text{Ethanol})$
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Conversion of benzene to acetophenone can be brought about by
The reaction is given as follows:
$Ph-CO-N(CH_3)(OCH_3) + 2CH_3MgBr \xrightarrow{H_3O^+} (P)$
Product $(P)$ is:
$Ph-CO-N(CH_3)(OCH_3) + 2CH_3MgBr \xrightarrow{H_3O^+} (P)$
Product $(P)$ is:
Medium
View SolutionConsider the following statements. Which of the following reactions can be used to prepare acetophenone?
$I.$ Oxidation of $1$-phenylethanol.
$II.$ Reaction of benzaldehyde with methyl magnesium bromide.
$III.$ Friedel-Crafts acylation of benzene with acetyl chloride.
$IV.$ Distillation of calcium benzoate.
Which of these statements are correct?
$I.$ Oxidation of $1$-phenylethanol.
$II.$ Reaction of benzaldehyde with methyl magnesium bromide.
$III.$ Friedel-Crafts acylation of benzene with acetyl chloride.
$IV.$ Distillation of calcium benzoate.
Which of these statements are correct?
Medium
View SolutionProvide the missing product in the following reaction:
$CH_3-CH=CH-CH_2OH \xrightarrow{PCC} (?)$
$CH_3-CH=CH-CH_2OH \xrightarrow{PCC} (?)$
Medium
View SolutionWrite a note on the preparation of aldehydes and ketones from the oxidation of alcohols.
Medium
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