3-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]propanoic acid

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3-(2-tert-Butoxycarbonylamino-ethoxy)-propionic acid (3.72 g, 15.95 mmol) was dissolved in vinyl acetate (147 mL, 1595 mmol). Pd (II) acetate (716 mg, 3.19 mmol) and KOH (89 mg, 1.59 mmol) were added to the reaction mixture and stirred overnight. The reaction mixture was transferred into a large excess of diethyl ether to fully precipitate the black Pd byproduct. The solution plus precipitate was then filtered through celite to remove the black precipitate. The resulting solution was then concentrated to dryness and the product purified on a silica column using ethyl acetate/hexane eluent. Yield=60%. to fully precipitate the black Pd byproduct The solution plus precipitate was then filtered through celite to remove the black precipitate The resulting solution was then concentrated to dryness the product purified on a silica column