How is N-[(1R,2R)-2-Amino-1,2-diphenylethyl]-4-methylbenzenesulfonamide (CAS: 144222-34-4) typically synthesized?

N-[(1R,2R)-2-Amino-1,2-diphenylethyl]-4-methylbenzenesulfonamide is synthesized via multi-step organic synthesis involving the preparation of the amino-substituted phenyl ethylamine followed by sulfonamide formation with 4-methylbenzenesulfonyl chloride. The reaction typically requires a phase-transfer catalyst and is carried out under mild conditions to achieve high yield and selectivity.