Efficient and practical synthesis of modular chiral β-organochalcogeno amines, ArYCH2CH(R)NH2, and single crystal structures of (S)-MsOCH2CH(Bz)NH3+·Cl− and (R)-MsOCH2CH(Ph)NH3+·Cl−

Retro-synthetic approaches for chiral β-oraganochalcogeno amines.