Isopropylamine → 2-Methylpropanoic acid (carboxymethylphosphonomethyl carbamoyloxy)-methyl ester-isopropylamine salt

Participants

Reaction Steps

To a stirred ice cold solution of 2-methylpropanoic acid (carboxymethylphosphonomethylcarbamoyloxy)-methyl ester (14.1 g, 43.8 mmol) in 80 mL of acetone was added isopropylamine (3.71 mL, 43.8 mmol). After 15 min of stirring the solvent was removed was removed under vacuum. The solid was washed with diethyl ether and subsequently dried under vacuum to afford 14.8 g of a tannish solid. 1H-NMR (300 MHz, D2O) δ (ppm): 1.01 (dd, 6H), 1.16 (d, 6H), 2.51 (m, 1H), 3.35 (m, 1H), 3.47 (d, 2H), 4.09 (d, 2H), 5.63 (d, 2H).

Provenance & Evidence