An acid–base reaction of (R)-sec-butylamine with a racemic mixture of 2-phenylpropanoic ac...

An acid–base reaction of (R)-sec-butylamine with a racemic mixture of 2-phenylpropanoic acid forms two products having different melting points and somewhat different solubilities. Draw the structure of these two products. Assign R and S to any stereogenic centers in the products, How are the two products related? Choose from enantiomers, diastereomers, constitutional isomers, or not isomers,