HCID 23468808, compound → HCID 53636383, compound

Participants

Reaction Steps

30.2 g (0.1 mol) of 3-(6,7,8,9-tetrahydro-2-dibenzofuranyl)-glutaric acid are refluxed with 100 ml of acetic anhydride for 11/2 hours. On leaving the cooled dark solution to stand, a crystalline precipitate forms and is filtered off after 48 hours and washed with cold toluene. The 3-(6,7,8,9-tetrahydro-2-dibenzofuranyl)-glutaric anhydride thus obtained melts at 164°-166°. After concentrating the filtrate under a waterpump vacuum, an addititonal amount of 3-(6,7,8,9-tetrahydro-2-dibenzofuranyl)-glutaric anhydride is obtained as yellowish crystals with the same melting point.

Provenance & Evidence