When d and l amine reacts with l−acid, stereochemistry of the formed product is:
Diastereomers are a type of a stereoisomer. Diastereomerism occurs when two or more stereoisomers of a compound have different configurations at one or more (but not all) of the equivalent (related) stereocenters and are not mirror images of each other.
When d and l amine reacts with l−acid, stereochemistry of the formed product is diastereomers as the compounds formed are not mirror images of each other.