Methyl 4-[methoxy(methyl)carbamoyl]benzoate → Methyl 4-butyrylbenzoate

Participants

Reaction Steps

To a solution of N-methoxy-N-methyl-terephthalamic acid methyl ester (4.56 g, 20.4 mmol) in THF (100 mL) is added PrMgCl (2.0M, 30.6 mmol) at 0° C., the reaction is warmed to room temperature, stirred overnight, quenched by NH4Cl aqueous solution, extracted with ethyl acetate. The combined organic layers are washed with brine, dried over sodium sulfate, concentrate. Column chromatography on silica gel gives the title compound (1 g, 23.7%).

Provenance & Evidence