Potassium Carbonate → 4-((1E)-3-methoxy-3-oxoprop-1-en-1-yl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

4-Formylbenzoic acid (20 g, 0.133 mol) and K2CO3 (55 g, 0.398 mol) were added to water (350 mL) and cooled to 0-5° C. Trimethyl phosphonoacetate (26 mL, 0.160 mol) was charged dropwise maintaining the reaction temperature below 15° C. The reaction was then warmed and stirred at RT for 1.5 h before acidifying to pH˜1. The resulting precipitate was filtered and dried in vacuo to afford the title product as a pale yellow solid (29.5 g, quant). 1H NMR (300 MHz, d6-DMSO) δ: 7.89-7.52 (5H, m), 6.59 (1H, d, J=16.2 Hz), 3.7 (3H, s).

Provenance & Evidence