Sodium Hydroxide → 2-(2-Trityloxycarbamoyl-ethyl)-succinic acid 4-tert-butyl ester

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Reaction Steps

To a solution of the compound of example 65 (2.27 g, 4.39 mmol) in a mixture of methanol/water (4:1, 50 mL) was added a solution of sodium hydroxide (1N, 9 mL). The resulting mixture was stirred for 24 h at room temperature. The solvent was evaporated and the residue was partitioned between water and ether. The alkaline phase acidified using HCl (6N) and extracted with ethyl acetate followed by drying over sodium sulfate, filtration and evaporation. The product was converted to an off-white foam under high vacuum. 1H-NMR(CDCl3, 400 MHz: 1.42(s, 9H); 1.59(m, 3H); 1.88-2.54(m, 4H); 7.33(m, 15H); 7.46(s, broad, 1H).

Provenance & Evidence