Acetic Anhydride → HCID 178476679, compound

Participants

Reaction Steps

A suspension of 1.55 g of 4,5-dihydro-10-(hydroxymethyl)-8-phenyl-7H-thieno[2.3-a]quinolizin-7-one in 6.7 ml of pyridine was treated with 3.35 ml of acetic anhydride while stirring, whereby a clear solution was obtained after about 15 minutes. After stirring overnight, the precipitated yellow crystals were removed by filtration under suction and washed with ether. The filtrate was evaporated in vacuo and the residue together with the above yellow crystals were recrystallized from methanol. There was obtained pure (4,5-dihydro-7-oxo-8-phenyl-thieno[2,3-a]-quinolizin-1-yl)methyl acetate of m.p. 145°-146°.

Provenance & Evidence