Sodium ethoxide → 2-(3-Phthalimidopropylthio)oxazole

Participants

Reaction Steps

3-Bromopropylphthalimide (13.4 g.) was added to a stirred solution of sodium ethoxide (from 1.15 g. sodium) and oxazole-2-thiol(5.1 g.) in ethanol (100 ml.). The resultant solution was heated under reflux for 2.5 hours and concentrated under reduced pressure. The residue was triturated with water (100 ml.) to afford 2-(3-phthalimidopropylthio)oxazole (14 g.) m.p. 101°. Recrystallisation from ethanol gave the pure oxazole, m.p. 102°-3°.

Provenance & Evidence