1. The Merrifield Solid-Phase Paradigm
Since Bruce Merrifield pioneered solid-phase synthesis in 1963, the stepwise addition of amino acids anchored to an insoluble polymer resin has unlocked automated peptide production.
2. Microwave Irradiation Benefits
Sterically bulky amino acids (such as Valine, Isoleucine, and pseudo-prolines) frequently suffer from sluggish coupling kinetics. High-frequency microwave heating directly energizes polar reagent dipoles, overcoming intra-chain aggregation without causing beta-sheet cross-linking.