Boc-L-3-Bromophenylalanine → 3-Bromo-L-phenylalanine

Participants

Reaction Steps

(2S)-3-(3-Bromophenyl)-2-(tert-butoxycarbonylamino)propionic acid (5.0 g, 14.5 mmol) was suspended in 4M HCl in 1,4-dioxane (75 mL) and stirred for 16 h at r.t. The white precipitate was filtered and washed with Et2O to give the title compound as a white solid (3.2 g, 89%) that required no farther purification. δH(CDCl3) 8.32 (2H, s), 7.50-7.48 (2H, m), 7.34-7.29 (2H, m), 4.22 (1H, t, J 6.2 Hz), 3.13-3.11 (2H, m). An exchangeable proton was not observed.

Provenance & Evidence