Concepts of Aldehydes, Ketones, and Carboxylic Acids - Chemical Reactions of Aldehydes and Ketones - Reduction

How will you bring about the following conversion in not more than two steps?

Benzoic acid to m-Nitrobenzyl alcohol

 Predict the main product of the following reaction:\[\begin{array}{c}
\ce{O\phantom{----}O\phantom{-}}\\
\ce{||\phantom{----}||\phantom{-}}\\
\ce{CH3-C-CH2-C-OCH3}
\end{array}\ce{->[(i)NaBH4][(ii)H+]}\]

How will you bring about the following conversion in not more than two steps?

Propanone to Propene

Complete the synthesis by giving missing starting material, reagent or product.

\[\ce{CH3COCH2COOC2H5 ->[(i) NaBH4][(ii) H+]}\]

Write the structures of the main products when acetone (CH₃ − CO − CH₃) reacts with the following reagent :

Zn − Hg/conc. HCl

Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.

Zinc amalgam and dilute hydrochloric acid

Explain the following reaction:

Wolff-Kishner reduction

Write the main product in the following reaction:

\[\ce{CH3CH2CHO ->[Zn(Hg)/Conc. HCl]}\]