How can 2-aminopropanoic acid be prepared form lactic acid in just 2 steps?

Answer 1

Use anhydrous Lactic acid near boiling point

Pass anhydrous Hydrogen chloride gas through it until no further increase in mass is found. This converts lactic acid into 2chloropropanoic acid.

Substitute NH2 group, either by reaction with sodamide OR by actrion of ammonia gas. First method preferred as second method produces the amide at the same time and this has to be hydrolyzed to free the desired product.

Melek

Answer 2

1. Lactic acid can be converted to lactide through thermal or catalytic dehydration.
2. Lactide can be reduced with a reducing agent like lithium aluminum hydride to yield 2-aminopropanoic acid.