2-Benzyloxycarbamoyl-4-methylpentanoic acid ethyl ester → 2-Benzyloxycarbamoyl-4-methyl-pentanoic acid

Participants

Reaction Steps

Intermediate (3b) (7.5 g, 25.5 mmol, 1.0 eq) was dissolved into 80 mL of 1N NaOH solution and stirred at room temperature overnight. The solution was then washed with 80 mL EtOAc, acidified to pH 1 with 6N HCl and extracted 2×100 mL EtOAc. The organic was dried over MgSO4 and concentrated to yield intermediate (3c) (6.6 g). 1H NMR (DMSO) δ (ppm): 1.0 (m, 6H), 1.4-1.8 (m, 3H), 1.3 (t, 3H), 1.5-1.7 (m, 1H), 3.2 (t, 1H), 4.9 (s, 2H), 7.4-7.6 (m, 5H) 11.4 (s, 1H).

Provenance & Evidence