Hydrochloric Acid → HCID 131715644, compound

Participants

Reaction Steps

The Boc-diester (I) (1.27 g, 2.36 mmol) was dissolved in dioxane (15 ml) and treated with 2.6 ml 1N sodium hydroxide solution at room temperature under argon for 4 hours. The reaction mixture was acidified (pH =2) with 3N hydrochloric acid and evaporated at reduced pressure. The residue was dissolved in ethyl acetate, washed with 3N hydrochloric acid, dried over MgSO4 and evaporated at reduced pressure. The residue was purified by flash chromatography (silica gel, 5% methanol/chloroform) to give 1.03 g of the title product: MS: MH+ =448); 1HNMR (CDCl3): 7.33 (S, 5H), 5.07 (S, 2H), 5.20-4.80 (m, 1H), 4.42-4.05 (m, 1H), 2.32 (S, 2H), 1.43 (S, 9H) and 2.08-1.07 (m, 16H).

Provenance & Evidence