Question

The major product of following reaction is

$R-C \equiv N \xrightarrow[(ii)H_2O]{(i)AlH(i.Bu)_2}$ ?

• A. RCHO
• B. $RCONH_2$
• C. RCOOH
• D. $RCH_2NH_2$

Answer 1

Answer: (A)

RCHO

Answer 2

DIBAL‐H (i.e. AlH(iBu)₂) reduces nitriles under controlled conditions to the corresponding imine–aluminum complex. On hydrolysis with water, this intermediate gives the aldehyde.