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Syntheses of ᴅ-phenylalanine (R)-116. Reagents and conditions: a) AcOH, CH2Cl2, reflux, 4 h; b) MsCl, TEA, CH2Cl2, −78 °C to rt, 6 h; c) H2, Pd(OH)2, Boc2O, MeOH, rt, 7 h; d) KOH, EtOH, rt, 10 min; e) MsCl, TEA, CH2Cl2, 0 °C, 2 h; f) LiAlH4, ether, rt, 4 h; g) CDI, CH2Cl2, rt, 24 h; h) RuCl3, NaIO4, CCl4/MeCN/H2O, rt, 7 h; i) HCl, reflux, 4 h.
