How is 3-(Aminomethyl)-5-methylhexanoic acid (CAS: 128013-69-4) typically synthesized?

3-(Aminomethyl)-5-methylhexanoic acid is typically synthesized via a multi-step process involving the protection of an amino group, followed by a condensation reaction with a carboxylic acid derivative. Commonly, the amino group is protected using tert-butyloxycarbonyl (Boc) or benzyloxycarbonyl (Z) groups. The protected intermediate is then reacted with 5-methylhexanoic acid chloride or an equivalent derivative under anhydrous conditions, followed by deprotection to yield the desired product. This method provides good yield and selectivity.