SINTESIS ETIL p-HIDROKSISINAMAT DARI REAKSI ETIL p-METOKSISINAMAT DAN PIRIDINA HIDROKLORIDA MENGGUNAKAN IRADIASI GELOMBANG MIKRO

An attempt to synthesis ethyl p-hydroxycinnamate from ethyl pmethoxycinnamate as natural starting material has been done by reacting it with pyridine hydrochloride under microwave irradiation. Ethyl p-methoxycinnamate was isolated from Kaempferia galanga L. The ether extract of result compound analyzed using TLC, resulted two new TLC spot. Then, the multi-component was separated by column chromatography and single-spot result was analyzed by spectroscopy of UV-Vis, FT/IR, and NMR. NMR spectra shown a lot of noise means that the compound was a multi-compound. GC-MS analysis was done to give a better resolution in separation. Result shown five peaks other than starting compound’s. MS spectra was analyzed and resulting demethylation was occured along with addition of hydrochloride at starting compound. Similar reaction was done with conventional heating to give the same result