反应详情

(Di-tert-butoxy-phosphoryloxy)-acetic acid benzyl ester (700 mg, 1.96 mmol) was dissolved in MeOH (40 mL) and passed through a “H-cube” hydrogenator with a 10% Pd on carbon cartridge under 40 psi of hydrogen at a flow rate of 1 mL/min. The reaction mixture was concentrated in vacuo to give 513 mg (98%) of (di-tert-butoxy-phosphoryloxy)-acetic acid, which was used in the next step without further purification. 1H NMR (400 MHz, CDCl3): δ 4.53 (d, 2H), and 1.51 (s, 18H).

1. concentrationThe reaction mixture was concentrated in vacuo