Question

Amongst the above conformations of 3-Aminopropanal $(P,Q,R,S)$, one of them is most stable. This can be attributed due to
(I) H-bonding in the conformer
(II) gauche conformation in the conformer
(III) anti conformation in the conformer
(IV) larger groups being separated by maximum distance in the conformer
The correct option is:

• A. II and IV
• B. I and II
• C. III and IV
• D. I and IV

Answer 1

The correct option is B I and II

Amongst the above conformations of 3-Aminopropanal $(P,Q,R,S)$, one of them is most stable. This can be attributed due to:
(I) $H-$bonding in the conformer
(II) gauche conformation in the conformer
In the conformation, $\left(P\right)$, the aldehyde group and the amino group are adjacent to each other. They form intramolecular hydrogen bonds.