Acrylamide → HCID 18640066, compound

Participants

Reaction Steps

A mixture of (±)-trans-1-propyl-6-oxo-decahydroquinolone (30.0 g, 154 mMol), acrylamide (32.8 g, 462 mMol), p-toluenesulfonic acid monohydrate (35.2 g, 185 mMol), and p-methoxyphenol (500 mg) in toluene (1000 mL) was heated to reflux, water being collected in a Dean-Stark trap. After 17 hr of reflux, the reaction was poured into dilute NaOH solution and extracted with methylene chloride The extract was dried (Na2SO4) and concentrated to give the crude product as a brown foam. Recrystallization (ethyl acetate/hexanes) provided the desired product as a tan solid (14.0 g, 37% yield). Purification of the mother liquors by flash chromatography (2:1 THF: hexanes, 0.5% NH4OH) provided additional product (Rf=0.40, 2.6 g, 7% yield). Recrystallization of this material (ethyl acetate) provided analytically pure material. m.p.=183.0°-184.0°.

Provenance & Evidence