Sodium Azide → HCID 178466053, compound

Participants

Reaction Steps

To 40 parts by volume of tetrahydrofuran are added under cooling 4.0 parts of anhydrous aluminum chloride, 3.20 parts of 6-acetyl-4-oxo-4H-1-benzopyran-3-carbonitrile and 2.93 parts of sodium azide in the order mentioned and, under stirring, the mixture is refluxed for 30 minutes. After cooled, the reaction mixture is concentrated to dryness. To the residue are added 100 parts by volume of 1N-hydrochloric acid and 3.10 parts of sodium nitrite, and the insoluble material is recovered by filtration and recrystallized four times from dimethylformamide to obtain 0.380 part of 6-acetyl-3-(1H-tetrazol-5-yl)-chromone as colorless crystals.

Provenance & Evidence